I work in a business _______ almost everyone is waiting for a great chance.

Many people ________ the accident, so it was not difficult to investigate（调查）.

The successful launch of Shenzhou VII must have immediately excited the Chinese, ____ it ?

.Hardly could he _________this amount of work in such a short of time.

The train will arrive at the station in half an hourWho ______for us?—-I am sure Dad will be standing there when we get off the train