I thought I would be punished for the broken glasses ________ I ended up being praised for my honesty.

A．andB．or

C．butD．so

After the war, a new school building was put up ________ there had once been a theatre.

A.that B．where

C．which D．when

—I think George doesn't really care for TV plays.

—Right, ________he still watches the program.

A.and B．but

C．or D．so

—I wonder how much you charge for your services.

—The first two are free ________ the third costs $30.

A．while B．until

C．when D．before

How can they expect to learn anything ________ they never listen?

A.whetherB．when

C．butD．unless

She usually keeps her valuables, such as jewels and money, ________ she believes secure.

A．even ifB．in case

C．whereD．that

Please call my secretary to arrange a meeting this afternoon, or ________ it is convenient to you.

A．whenever B．however

C．whichever D．wherever

——Did you inform Helen of the plan put forward at the meeting?

—Of course. ________ I saw her.

A．So long as B．If only

C．The moment D．Any time

Scientists are warning that ________ emissions of carbon (碳排放) are cut, we could be heading for an environmental disaster.

A．before B．as

C． unless D．in case

I will accept Guy coming with us, ________ he pays for his own meals.

A．only if B．so that

C．ever since D．even though