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
（）more attention, the tree could have grown much better than that one.

A．To give
B．Given
C．To be given
D．Having given
单项选择题
Was it Ann（）you gave the message

A．whom
B．to whom
C．who
D．to who
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