单项选择题


Questions 19 to 21 are based on the conversation you have just heard.

A．Because he can’t find his office key.
B．Because he has misplaced some exams.
C．Because he’s unable to talk.
D．Because he doesn’t like his classroom.
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单项选择题
What is the new benefit of exercise found by those scientists（）

A．It can build muscles.
B．It can prevent heart disease.
C．It can keep people healthy.
D．It can improve brainpower.
单项选择题
A．Mr. Smith is very kind.B．The woman need not worry.C．He is worried.D．He likes Mr. smith.
A．Mr. Smith is very kind.
B．The woman need not worry.
C．He is worried.
D．He likes Mr. smith.
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