单项选择题

More thunderstorms ______in summer than any other time of the year.

A．happened
B．have happened
C．happen
D．will happen
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单项选择题
The patient''s health failed to such an extent that he was put into ______care.
A．tense
B．rigid
C．intensive
D．tight
单项选择题
By 1929, Mickey Mouse was as popular______ children as Coca-Cola.
A．for
B．in
C．to
D．with
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