根据句意和汉语提示，填写恰当的短语完成下列句子。

1. I hope you can come back _____(尽快地).

2. All the teachers _____(乐意帮助) students to solve their problems.

3. We should _____(坚持) our dreams and try to achieve them.

4._____ (数以千计的) students were surveyed about their favorite foods.

5. My sister _____(梦想) becoming a singer. She likes singing very much.