8. Parents should set a limit 　　　　　their children’s time spent 　　　　　playing online games.

7. Most paintings 　　　　　display in the museum last week date back 　　　　　the Qing dynasty.

6. Most shoplifters (商店扒手) give themselves 　　　　　by frequently looking around 　　　　　cameras.

5. Let’s make a toast 　　　　　your health.

4. This play will be put 　　　　　again this weekend 　　　　　the request of the audience.

3. May I ask a favor 　　　　　you to lift 　　　　　the box for me?

2. It’s rude 　　　　　him to refuse to say sorry 　　　　　you for his bad manners.

Ⅵ. Fill in the blanks with proper prepositions or adverbs.

1. Look out 　　　　　that dog—it may make an attack 　　　　　you.

12. 期末考试就要到了，我们正忙着复习功课呢。 (be busy)

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11. 打个电话核实一下他到达机场的时间。 (make sure)

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