单项选择题

We couldn't have passed the final examination（）your help.

A．but for
B．without
C．if it had not been for
D．All of the above.

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单项选择题
On the hill are maple trees（）leaves have turned red.

A．who
B．whom
C．whose
D．which
单项选择题
Kenny was finishing his assignments when his father（）home from work.

A．comes
B．came
C．has come home
D．is coming home
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