--Will you go to the party? －Of course I will if_________.
A. I was invited
B. invited
C. having invited
D. I will be invited
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When________ where he was born, the old man was afraid to give his address.
A. asking
B. asked
C. was asked
D. ask
_____ for your brother, I would not have gone to see Mr. Wang.
A. If it is not
B. Were it not
C. Had it not been
D. If they were not
He suggested that the work ________ at once.
A. be done
B. should do
C. could do
D. does
All substances, _________ solids, liquids, or gases, are made up of entirely atoms.
A. whether they
B. whether
C. whether are they
D. whether are
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