单项选择题

Can the man turn on the heater

A． Yes, he can
B． No, he can’t
C． We don’t know
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单项选择题
What happens to Mary’s mother
A． She is ill.
B． She is old.
C． She is tired.
单项选择题
A． have to B． had to C． has to
A． have to
B． had to
C． has to
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