【推荐1】March 22 is World Water Day. It started in 1993. It not only makes us think about the importance of water, but also calls on us to save and ______ water. Today, we’re facing terrible water problems. Among them, wastewater problem is especially _______ And the subject of World Water Day in 2017 is “wastewater”.

What is wastewater? It is used water. Usually, wastewater comes from ______, factories, hospitals and so on. It is produced by different kinds of activities, including washing the machines, taking showers and using the kitchen. The rain also ______ wastewater when it is running down the street during a storm. No matter where it comes from, this kind of water is sure to have   _____ harmful in it.

______ must we treat wastewater? Wastewater has a big influence(影响) on our life. It causes both illness for us and pollution for the environment. We must care for our environment and our own ______.

How can we treat wastewater? Different kinds of wastewater need different ways of treatment. Wastewater _____ homes can be reused. Then there will be ______ wastewater. Also, factory wastewater has to be cleaned ______ it goes back to nature.

Carlos wanted a bulldog puppy（小狗）very much.

“That kind of dog is too expensive,” said Mama. “Try to make some money. Ask our neighbors if they have ________you can do.”

After two weeks, Carlos had saved twenty-six dollars. But it was not enough to ________ a puppy. Then, Papa pointed out a poster at the store: City Animal Shelter（收容所）Needs Your Help!

“The shelter takes care of homeless pets,” Papa said. “Carlos, you need to know ________ to care for a puppy before you get one. I’m sure you can ________ a lot by working there.”

At the shelter, Miss Jones, the manager said, “We only take volunteers who work for ________. All our money is to help animals.”

“You’ll know a lot about dogs,” Papa ________ Carlos.

Carlos’s shoulders dropped. How was he ever going to get enough money for a puppy? _______ he agreed to give it a try.

Carlos started working at the shelter on Saturday. His task was sweeping. One ________ named Pepper jumped and ran around him all the time. She was fully grown, but she was as playful as a puppy.

After several weeks, Carlos began to ________ his time with the dogs, especially Pepper. One day Carlos asked Miss Jones why Pepper was still at the shelter.

Miss Jones sighed, “We’ve had ________ finding a home for Pepper. Most people don’t want such an energetic（精力旺盛的）dog.” “I ________ I could buy her,” Carlos replied.

Miss Jones   smiled, “You can’t buy her, ________ you can adopt（领养）her.”

With his parents’ permission, Carlos made it at last. “I thought I wanted a bulldog puppy, but I got Pepper instead,” Carlos said.

Pepper barked with joy.

【推荐3】Many people like pandas very much. They are very _________. Most of them live in Sichuan, _________. They _________ white hair, but their shoulders, legs, ears and eyes are _________. Pandas are usually heavy, but they can climb trees like other _________. Pandas’ _________ food is bamboo leaves. But long long ago(很久很久以前), pandas liked to eat meat. It _________ pandas a lot of time to have food every day. When pandas are full(吃饱了的), they like _________. They relax many hours every day. However, there are not many pandas in the world today. _________ some people cut down too many bamboo trees and pandas can’t find enough(足够的) food. I think we must __________ them.