He was about halfway through his meal ____ a familiar voice came to his ears.

A．why B．where

C．when D．while

The hurricane damaged many houses and business buildings; ____ , it caused 20 deaths.

A．or else B．therefore

C．after all D．besides

Sorry, Madam.You’d better come tomorrow because it’s ____ the visiting hours.

A．during B．at

C．beyond D．before

Japan is ______ the east of China.

A．in B．to

C．on D．at

We can't do it ______ your help.

A．with B．of

C．under D．without

I didn't buy the dictionary yesterday _____ my aunt would give me one.

A．until B．because

C．if D．before

Don't hurry. The bus won't start ______ everybody gets on.

A．since B．as

C．until D．when

______ the maths problem is difficult， I'll try very hard to work it out.

A．Though B．When

C．Before D．After

The accident took place ________ a cold February evening.

A．on B．in

C．at D．for

He turned ________ the radio because his father was asleep.

A．on B．down

C．up D．over