【推荐1】The expert concluded his summary ________ an old Chinese saying. (用适当的词填空)

【推荐2】Don’t fall behind. You should catch up ________ other students in your class. (用适当的词填空)

【推荐3】Because of his one-week stay in hospital, Mark is having trouble _________ his schoolwork.

【推荐1】语法填空
1. Modern methods ________ tracking polar bear populations have been employed only since the mid-1980s, and are expensive to perform   (perform) consistently over a large area.
2. We were first greeted with the barking by a pack ________ dogs, seven to be exact.
3. But can uniforms help improve school standards? The answer ________ this question is not clear.
4. First celebrated _______ 1970, the Day now includes events in more than 190 countries and regions(地区).
5. I know I will whisper to _______(I) the two simple words “Be yourself”.
6. I was searching ________ these three western lowland gorillas I'd been observing. No one had seen them for hours, and my colleagues and I were worried.
7. If you are not going to suffer this problem, then I suggest that the next time you go to your mum’s home ________ dinner, get a few cooking tips from her.
8. If you are time poor, you need run for only half the time to get the same benefits as other sports, so perhaps we should all give________a try.
9. When the gorillas and I frightened each other, I was just glad to find __________(they) alive.
10. Many westerners ________ come to China cook much less than in their own countries once they realize how cheap ________ can be to eat out.
11. There has been a recent trend in the food service industry towards lower fat content and less salt. This trend, which was started by the medical community(医学界) ________ a method of fighting heart disease, has had some unintended side effects such as overweight and heart disease—the very thing the medical community was trying to fight.
12. In 1863 the first underground passenger railway in the world opened in London. It ran for just under seven kilometres and allowed people to avoid terrible crowds on the roads above as they travelled to and ________ work.
13. After school she plans to take a year off to model full­time before going to university to get a degree _______ engineering or architecture.
14. However, the railway quickly proved to be a great success and within six months, more than 25，000 people were using ______ every day.
15. On my recent visit, I help a lively three-month-old twin that had been rejected by _____ (it) mother.
16. Do you, for instance, feel that too much is being expected of _____, and yet find it impossible to say no?
17. By that time, the panda no longer needed ____(it)mother for food.
18. But my connection with pandas goes back ______ my days on a TV show in the mid-1980s,
19. Most of us are more focused _____our tasks in the morning than we are later in the day.
20. Chopsticks are not used everywhere in Asia. In India, for example, most people traditionally eat ______ their hands.
21. The mother continued to care for the young panda ____more than two years.
22. A few hours before/earlier, I’d been at home in Hong Kong, with ________(it) choking smog. Here, the air was clean and fresh, even with the rain.
23. A woman on the bus shouted , “Oh dear “ It is ______（I）”.

【推荐2】I will greet this day _________ love in my heart. (用适当的词填空)

【推荐3】He started out______________________a teacher and only began writing in his thirties. (用适当的词填空)