单项选择题

These machines have been idle for the past month.

A．been troublesome
B．been working well
C．not been in service
D．not been running at all
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单项选择题
I don't want to borrow the money, so I prefer to manage ______.
A．to
B．with
C．for
D．without
单项选择题
It was very kind of you to get me something for my birthday, but you ______ me such an expensive present.
A．didn't need buying
B．needn't buy
C．needn't have bought
D．hadn't needed to buy
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