1 . The machine must be checked up before ________(use). (所给词的适当形式填空)

2 . After he became conscious, he remembered ________(attack) on the head with a rod. (所给词的适当形式填空)

3 . I still remember ________(take) to Famen Temple and what I saw there.（所给词的适当形式填空）

4 . These birds escaped _______ (kill) by the hunter. (所给词的适当形式填空)

5 . We must reduce the use of pesticides (杀虫剂) and fertilizer so as to protect our rivers, streams and farmlands from ______________(pollute). (用所给词的适当形式填空)

6 . One should keep in mind that entering others’ room without ________ (ask) to is not polite. (所给词的适当形式填空)

7 . The girl stopped crying, because she was afraid of ________ (leave) alone in the dark house. （所给词的适当形式填空）

8 . Two survivors were rescued after ________(trap) under the ruins for two days. (所给词的适当形式填空)

9 . I really appreciate ________(invite) to give this speech. (所给词的适当形式填空)

10 . She changed her name and appearance to avoid ________(recognize). (用所给词的适当形式填空)