（ ） born in Chicago, the author is most famous for his stories about New York City.

When and where to hold the meeting （ ） not decided yet.

I have bought _____ useful reference books _____ I don’t know which one to start with.

This travel agency （ ） ＄360 for a single adult with a child under 12 for a round trip to the Great Valley.

He spoke so quickly that I didn’t_____what he said.

______ , Martin can reach the branch of that tall tree at the gate.

He studies so hard to avoid （ ） at the bottom of the class.

By the time you arrive in London, we （ ） in Europe for two weeks.

Her sister always spends so much _____ her clothes that she can’t manage to live with her salary.

The chemical factory was pulled down _____protecting the environment.

Ten minutes _____ an hour when one is expecting a phone call.

_____ finished his work, he had to stay at home on the weekend.