1 . The book you referred to yesterday______(sell) well. (所给词的适当形式填空)

2 . There is no point in buying this washing powder, because this kind of cloth ________ (wash) easily. （所给词的适当形式填空）

3 . Careless users and local guards are ________ (blame) for the broken blikes. （所给词的适当形式填空）

4 . Your composition________（read）beautifully. Is it the one I saw you write yesterday? （所给词的适当形式填空）

5 . With a lot of homework ________ (finish), the sleepy boy can't go to sleep as he wishes.（所给词的适当形式填空）

6 . The broken computer needs________ (repair).（所给词的适当形式填空）

7 . We have made environmental policies for business ________ (observe). (所给词的适当形式填空）

8 . I don’t think the windows need________ (clean) at this time of the night. （所给词的适当形式填空）

9 . I’m afraid we’ll have to work extra hours, for some problems are hard   ________ (settle). (所给词的适当形式填空)

10 . She will tell us why she feels so strong that each of us has a role ________(play) in making the earth a better place to live in. (所给词的适当形式填空)