单项选择题

Have you heard the news______she failed in the English exam again

A. which
B. if
C. that
D. whether
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单项选择题
The medicine has many functions, ______are unknown to us.
A. some of that
B. some of them
C. some of which
D. some of what
单项选择题
The doctor recommended that he______a rest for a few days.
A. has
B. will have
C. have
D. had
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