1 . A recent study shows that more years of school could help students get higher scores on intelligence tests. That was the finding of a study of teenage males in Norway. Now, other research shows that_______activity may help students do better in their classes.

The research comes as educators in some countries are reducing time for activities like physical education. They are using the time instead for_________subjects like math and reading.

Researchers at VU University Medical Center in Amsterdam_______the results of fourteen studies, which included more than fifty-five thousand children, aged six to eighteen.

Research Amika Singh says the studies showed a _______between physical activity and scores on subjects such as Math, English and reading. “Based on the results of our study we can conclude that being physically active is_______for academic performance.”

Ms. Singh_________some possible explanations. “There are, first, physiological explanations, like more blood flow, and so more oxygen to the brain. Being physically_______means there are more hormones produced like endorphins（内啡肽）. And endorphins make your stress level lower and your mood improved, which means you also_______better.”

Also, students_______in organized sports learn rules and how to follow them. This could improve their classroom________and help them keep their mind on their work.

The study__________some questions unanswered, however. Ms. Singh says it is not possible to say whether the amounts or kind of activity________the level of academic improvement. This is because of differences among the studies.

Also, they were mostly observational studies. An observational study is where researchers do not do controlled comparisons. They only describe what they observe. So they might observe a link that students who are more active often have better grades. But that does not__________mean being active was the cause of those higher grades. Therefore, more high-quality studies are needed to ________their findings.

Still, the general finding was that physically active kids are more likely to do better in school. Ms. Singh says schools should consider that finding before they________physical education programs.

2 . The first basketball game was played in the late 19th century in Massachusetts, America. On a cold winter day,_______it was impossible to do much outdoor sports, Canadian Doctor James Naismith came up with the idea of a new ball game,_______he hoped people would enjoy during the long winter months.

James wrote some simple rules for the new ball game, most of_______rules are still in place today. But some of the rules have changed a bit. For example, in the original game rules, bouncing the ball was prohibited.

After the new ball game was introduced to the public, it was such a hit_______attracted many people’s attention. Many people came to indoor sports centers in groups______they could avoid the extremely low temperature outdoors to play this new ball game together. The first basketball game_______consisted of 18 players was standard to the baseball teams of the day.

Since Naismith didn’t have the money to design a new ball, early games used the soccer ball,______the price was relatively low. Later on,William R. Chase made the ball go into the basket, and thus became the first player to ever score in a basketball game. It was during this game_______someone suggested a name for this new sport --- basketball.

3 . Hailing from Sweden, “plogging” is a fitness craze that sees participants pick up plastic litter while jogging adding a virtuous, environmentally driven element to the sport. Plogging appears to have started around 2016, but is now going global, due to increasing awareness and __ over plastic levels in the ocean.

The appeal of plogging is its __—all you need is running gear and a bin bag, and the feeling of getting fit while supporting a good cause. By adding regular squats(蹲) to pick up junk and carrying __ to jogging. we can assume the health benefits are increased.

Running and good causes have always gone __ — just think of all the fundraising marathon runners do. But there couldn’t be a more on-trend way of keeping fit than plogging.

Anything that’s getting people out in nature and connecting __ with their environment is a good thing, says Lizzie Carr, an environmentalist who helped set up Plastic Patrol, a nationwide campaign to __ our inland waterways of plastic pollution. There’s been a real __ in the public mindset around plastics, helped by things like Blue Planet highlighting how disastrous the crisis is,” she says.

We need to keep momentum high and the pressure up, and empower people through __ like plogging and Plastic Patrol.

The plastic Patrol app allows users to __ plastic anywhere in the world by collecting discarded items, photographing them and __ to the app, giving us a better knowledge of what sorts of plastic and which brands are being thrown out. “I’d urge all ploggers to get involved,” adds Carr.

Plogging isn’t the first fitness trend to combine running with a good cause, Here are some of our favourites:

Good Gym

Its idea is simple: go for a run, visit an elderly person, have a chat and some tea, and run back.

__ among the elderly is a growing problem in the UK. With over 10,000 runs so far, __, Good Gym is finding a solution.

Guide Running

Guide runners volunteer their time to helping blind people get __. By linking themselves together, the __ —impaired individual can feel safe while both work of a sweat.

___for the Homeless

Start-up Stuart Delivery and the Church Housing Trust collaborated last year in bringing clothing and healthy food to the homeless. Deliveries are mostly made by bike, so those who deliver keep fit while helping rough sleepers(无家可归者).