–Irangyouataboutteno’clock,but

– I rang you at about ten o’clock, but there was no reply.
– Oh, that was probably ________ I was seeing the doctor.

A．when

B．why

C．what

D．that

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. Deer____ mainly on grass.

A．live

B．lives

C．feed

D．feeds

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. Why didn’t you come? Haven’t you __________?

A．allowed

B．promised

C．invited

D．agreed

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This dictionary is _____ to my reading, but that one is __________.

A．great help; helpless	B．a great help; of no use
C．important; of few importance	D．very helpful; of no any use

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. We can hope ___ the best but we must prepare ____ the worst at the same time.

A．for; for

B．for; /

C．/; for

D．/; /

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.Professor White has received a letter ___ to give a lecture in Peking University.

A．to be invited

B．being invited

C．invited

D．inviting him

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