用所给词组的适当形式完成句子，每空一词。

1. Instead of giving up, Hawking ____ ____ _____(继续)his research.

2. _____ _____(多于)90 responsible and caring citizens made their voices heard today.

3. The buildings look like boxes with sharp corners and glass walls that _____ _____(充当)mirrors.

4. Poetry also _____ _____(使人想起) all the colors, feelings and curious images of a dream world.

5. If we want to ______ _____ _____ (有所作为), we should study hard.