He was working on a new book ________ I went to see him.

ou think it wise for Chinese mothers to try todo everything for their children— No, that’s ______ they are mistaken.

If I _____ Barack Obama, I ______ to receive the Nobel Prize for Peace. 　　 — Really? Why? 　[ ]

The little girl stood there, not knowing what to do, ________by what she had seen[ ]

I need to ________a job because my mother cannot cover the cost of my school fees.[ ]