单项选择题

You (have) (heard from) him (since) last month, (have) you

A. have
B. heard from
C. since
D. have
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单项选择题
(During the discussion), Mr. White (remained silent) (when) (asking) his opinion.
A. During the discussion
B. remained silent
C. when
D. asking
单项选择题
Since her blood pressure is (much) higher (than) (it should be), her doctor insists that she (will) not smoke.
A. much
B. than
C. it should be
D. will mot
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