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A.climbsB.climb

A.beautifulB.beautifully

【1】You ________shout in the classroom.

【2】You ________save energy.

【3】You ________use paper bags and glass bottles.

【4】We ________cut down too many trees.

【5】We ________save trees.

-OK.

A.myB.meC.I

A.are doing theyB.do theirC.are doing their

-I’m sorry.

A.a lot ofB.manyC.much

A.useB.usingC.useful

A.use paper bags and glass bottles

B.save water

C.waste water

A.What’sB.WhatC.How

A.amB.isC.are