Mary with her two daughters _____ going to Shanghai next month.
A. are
B. was
C. is
D. were
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____ more exercise does good to your health.
A. Do
B. Does
C. Did
Doing
____ is impossible to finish this job before Wednesday.
A. That
B. This
C. It
D. They
___ six years since I began to study English.
A. It is
B. I have been
C. There are
D. It was
___ in the room at that time.
A. Someone were
B. Nobody was
C. Who is
D. He are