题目内容

He is very busy his papers. He is far too busy callers.

A. to write...to receive
B. writing...to receive
C. writing...receiving
D. to write...for receiving

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A. receiving...selling
B. to receive...to sell
C. to receiving...to selling
D. to have received...to have sold

A. saying ...talk
B. telling ... say
C. talking ...speak
D. talking ... tell

A. to fix
B. fixing
C. for fixing
D. fix

A. telephoning to
B. to telephone
C. to telephone to
D. the telephoning to