On two occasions the man was accused of stealing money from the company, but in ________ case was there any evidence to support the accusation．

either

both

each

neither

We think their requirement ________ the work ________ before next Monday is beyond our ability．We demand that it be changed．

that; be finished

/; be finished

that; finished

whether; finished

Now everyone is concerned about how to conquer the economic crisis, ________ is very important for us to be able to preserve our standard of living．

which success

its success

the success of which

the success of it

－I'm sorry, but I cannot repeat that sentence．

－Why not?________ very carefully?

Aren't you listening

Weren't you listening

Don't you listen

Hadn't you listened

He was so crazy about the book that he had read it for two hours ________ he realized the time．

while

since

before

after

At no time, of course, ________ anyone to separate Taiwan from the motherland in any name or by any means．

will we allow

we will allow

will we be allowed

we will be allowed

－I had tried many times, but still failed in the experiment．

－Don't be discouraged．________ and you will surely meet success．

Having a little effort

There being a little effort

A bit more effort

If you have a bit of effort

He ________ be happy now－he just heard that he failed the math exam．

wouldn't

can't

mustn't

needn't

After fighting against the snowstorm, the young men returned home, ________．

safe but exhausted

safety and exhausted

safely but exhausting

safe and exhausting

The natural disasters in 2008 were ________ challenge for our nation, which urged ________ country's leading scientists to carry out international cooperation to make disaster prevention．

the;/

a;/

/; the

a; the