单项选择题

We should do everything in our power to develop ______ alternatives to petrol.

A．audible
B．capable
C．liable
D．viable
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单项选择题
This cloth ______ very thin.
A．feels
B．touches
C．holds
D．handles
单项选择题
I didn't help him. I would have ______ I didn't have the money.
A．or
B．but
C．otherwise
D．still
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