1 . When I am tired with math exercises, I will go out for a walk to get ________(relax).

2 . There was a __________(puzzle) look on her face.

3 . 一听到这个让人迷惑的问题，他感到迷惑不解，脸上出现了迷惑的表情。
_________________ the _____________ problem, he felt ___________ and there was a _________ look on his face.

4 . The final examination is just around the corner. I’ve never spent a more________(worry) week than this. (所给词的适当形式填空)

5 . _______(shock) by the news that their son needed an operation on his knees, the parents burst into tears. (所给词的适当形式填空)

6 . The news was ________(frighten) and they were very _______(shock) at it. （所给词的适当形式填空）

7 . The news was frightening and they were all f________.（根据首字母单词拼写）

8 . Humans are and will continue to become increasingly ______ about the problems ______ health and well-being through food.

A．concerning; concerned	B．concerned; concerned
C．concerning; concerning	D．concerned; concerning

9 . After hearing his ________ reasons, the lawyer became ________ that he had nothing to do with the case. (convince) (所给词的适当形式填空)

10 . China’s___________(amaze) performance has greatly affected the world’s economic output. (所给词的适当形式填空)