单项选择题

You ______ be more careful next time.

A．may
B．must
C．have to
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单项选择题
--How do you go to school --I go to school ______.
A．every day
B．from my home
C．by bus
单项选择题
I didn't hear of it, he didn't ______.
A．neither
B．too
C．either
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