1 . A man dressed in a black coat was observed ________ (enter) the house and later the owner found all the valuable things stolen. （所给词的适当形式填空）

2 . The City Council has a plan to ________ (beauty) the city. （所给词的适当形式填空）

3 . When we were children, our parents used to ______ (bury) something in the yard for us to dig up. (所给词的适当形式填空)

4 . The house having been surrounded by the police, the kidnappers fell into despair and had no choice but ____________(give) in. (所给词的适当形式填空)

5 . There is always a lot for cleaners ______ (clean) up in the park at the weekends. (所给词的适当形式填空)

6 . Smiling and laughing has actually been shown to_________(relief) tension and stress. (所给词的适当形式填空)

7 . I’m likely ________ (be) very busy tomorrow. (所给词的适当形式填空)

8 . Be careful not ________ (damage) the priceless vase. (所给词的适当形式填空)

9 . Studies show that people are more likely________ (suffer) from back problems if they always sit before computer screens for long hours. (所给词的适当形式填空)

10 . With the deadline drawing near, he is anxious ________(complete) his task as soon as possible. （所给词的适当形式填空）