单项选择题

With his poor English, he even cannot get his ideas across, ______ exert any essential effect on others.

[A] let alone
[B] that's to say
[C] not to speak
[D] not to say

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单项选择题

Once ______, the information superhighway will drastically change the lifestyle of all the residents on this island.

[A] it being completed
[B] it completed
[C] completed
[D] it completes

单项选择题

In such a(an) ______ competition, not few businessmen went bankruptcy.

[A] intense
[B] tense
[C] intensive
[D] extensive

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