用所给单词的适当形式填空。

1. As a child the thought kept __ (occur) to me, "Who am I?"

2. Cheer up! All the signs __ (indicate) that business will get better.

3. It is time that the entertainment industry of China __ ( reform) itself.

4. However, most people have not yet ____ (grasp)what we have  been saying.

5. My uncle owns a little farm. Sometimes he __ (hire) two or three labourers to help his harvest.