7. A. drinking B. washing C. cooking D. boating

6. A. easy B. easily C. hard D. hardly

5. A. of B. in C. from D. by

4. A. most B. more C. all D. many

3. A. make B. have C. need D. swim

2. A. on and near B. over and around C. above and below D. in and round

1. A. clean and fresh B. in rivers and lakes C. enough D. dirty

2.　　　 Andy made me laugh.

I _____ ______ _____ laugh by Andy.

(四)完形填空

　　 We must have water to live. If the water is not ____1____, it can make us ill. The animals that live ____2____lakes and rivers also ____3____ water.oar

Our rivers and lakes supply _____4___　 of our water. The cleaner water found ___5_____ the first settler(开拓者)has changed. Many rivers and lakes are polluted today. They are filled with dirt and waste which cannot be ____6____cleaned out. In many places, water is not safe for ____7____.

Lake Erie(伊利湖)was once a beautiful lake. Now it has been called "a dying lake". Waste from nearby homes and factories has been poured into ____8____. ____9____ can no longer ____10____ in much of its polluted water.

Water can't be made ____11____. Once water is polluted, it is hard to make it ____12____. We must learn to ____13____ of the water we now ____14____, and also it is ____15____ for both man and all the living things tomorrow.

1.　　　 we use computer to study.

Computer _____ ______ to study.

5. There is________ water in the river. It's almost dry.

A. few B. little C. much D. many

(三)把下列句子变成被动语态