单项选择题

Never before have I heard the song () in English.

A．to be sung
B．singing
C．sung
D．singing

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单项选择题
He took () smaller of the two.

A．/
B．the
C．a
D．one
单项选择题
She always thinks of()she can do her bit for the family.

A．where
B．when
C．what
D．how
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