题目内容

None of them ______ my friends.

A. is
B. are
C. was
D. has been

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Not the whole nation, but the whole Europe , indeed the whole human society ______ to alter its attitude to racial problems.

A. need
B. needs
C. has a need
D. have a need

Getting to other planets or to the moon _____ many problems.

A. involve
B. involves
C. involving
D. to involve

In that country, the rich ______ richer, the poor, poorer.

A. become
B. has become
C. becomes
D. is becoming

Not one in one hundred children exposed to the disease ______ likely to develop it.

A. should be
B. must be
C. is
D. are

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