单项选择题

They can't help ______ when they saw the clown.

A． laugh
B． laughing
C． to laugh
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单项选择题
Tommy is careless; he doesn't remember ______.
A． where his books are
B． where are his books
C． his books are where
单项选择题
—I don't like dancing.— ______.
A． I don't neither.
B． Neither do I.
C． Nor am I.
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