—Did Jack come back early last night?
—Yes, It was not yet eight o'clock _____ he arrived home．

．Tom took the police to the spot ____ the accident happened．

____ much advice I gave him, he did exactly what he wanted to.

. Huang Yan left word with my secretary ___ she would call again in the evening.

_______you can easily have lunch in the restaurant around the corner, why do you take the trouble to drive many miles here?

A．When

B．Unless

C．While

D．Where

. It is reported that two hotels，_____ are being built in my hometown，will open next year.

Imagine life as a game ____ you are playing with five balls. You name them---work, family, health, friends and spirit.

It is ____ you deal with difficulties that shows ____ you are really like.

I had been puzzled over the problem for over an hour without any result, ____ all at once the solution flashed across my mind.

On the third floor there are two rooms, ____ is used as a meeting-room.