Unit13 We‘re trying to save to the earth单元测试（有答案）

C.valuable

D.interesting 2.What a great woman! She built__________a house out of rubbish. A.her

B.herself

C.hers

D.by her 3. How much does the ticket from Shanghai to Beijing__________？ A.cost

B.take

C.spend

D.pay 4.He__________ go out with his parents , but now he__________ staying at home alone. A.used to;is used to

B. is used to;used to C.use to;is used to

D.is used to;is used to 5. -The classroom is so bright now.You should __________the lights.－OK,I will. A.turn on

B.turn up

C.turn down

D.turn off 6.Don't play games on the computer all day.It's __________to your eyes. A. harmful

B.useful

C.helpful

D.thankful 7.-Why are you so worried －Because I've lost the watch__________ my dad bought me on my birthday. A.what

B.who

C.whose

D.which 8.－I'm sorry,Miss Green.I left my math book at home. －It doesn'

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