The man we followed suddenly stopped and looked as if _______ whether he was going in the right direction.

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__________ my return, I heard that my parents ___________ at the supermarket．

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A．At；went

B．On；have been

C．On；had been

D．During；had been

--Are you going to the party?

--No, I _______.

[　　]

A. am not invited

B. shall not be invited

C. haven't invited

D. haven't been invited

After ________ for the job, you will be required to take a language test.

[　　]

A. be interviewing

B. interview

C. interviewing

D. having been interview

If the light from the sun ________ so bright, the stars ________ in the sky all day.

[　　]

A. were not; would be seen

B. is not; would have seen

C. are not; would have been seen

D. would not be; have been seen

I wish I ________ what is happening.

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--Will you go to the party?

--Of course I will _______.

[　　]

A.if invited

B. if having invited

C. if I was invited

D.if I will be invited

--I don't think we ________ before.

--________, but I saw you at a party from a distance.

[　　]

Not until all the fish died in the river _________ how serious pollution was．

[　　]

A．did the villagers realize

B．the villagers realized

C．the villagers did realize

D．didn't the villagers realize

--Excuse me. Where's Mr Brown's office, please?

--It's on the third floor. But he ________there now. He's gone to the airport to meet some Chinese friends.

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