单项选择题

The European Union countries were once worried that they would not have ______ supplies of petroleum.

A．proficient
B．efficient
C．potential
D．sufficient
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单项选择题
John wants to ______ of his old bike and buy a new one.
A．dispose
B．dismiss
C．distribute
D．disturb
单项选择题
Pick me up at 8 o'clock. I ______ my bath by then.
A．may have
B．will be having
C．can have had
D．will have had
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