1. A. like　　　 B. likes　　　　　 C. liked　　　　　　　　 D. liking

6.People have found some ways to get _______ (drink)water from sea water.

II. Choose the words or expression_rs to complete the passage

You know people all over the world ___1__ sports. People play different games in winter and summer. Some people like to watch others playing sports games. They __ 2____ tickets or watch the games on their TV.

　 Some sports __3___ very interesting and people everywhere go in for them. For example, football __ 4___ popular in the world. Basketball and volleyball are popular in many countries, too. __ 5___ is your　 __　 6___ sport?

5.Plants and the animals will _____(dead) if there’s no rain.

4.We must stop ______ (pollute) the air.

3.We must keep oceans ______ ( clean ).

2.Tigers are a kind of _______(danger) animals.

1.We can use water for ______ (clean) our classroom..

II. Read the passage and fill in the blanks with the proper words

　 People can live without f______a day, b______ people can hardly live without water a day. We n_____ water very much.. We use water to m______ drinks and to c______ rice. We need water e_______.

第三课时：

I. Complete the sentences with the given words in their proper forms.

10.We can save water _______our teeth under a running tap.

A. by not brushing　　　　　　　　　　 B.by brushing

C.with not brushing　　　　　　　　　 D.without brushing

9.We should fix ______taps to save water.

A. drip　　　　　　 B. driping　　　　　　　　　　 C. dripping　　　　　　 D. dripped