单项选择题

______ he would have passed the important exam.

A．Had he worked hard
B．Did he work hard
C．Were he to work hard
D．If he worked hard
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单项选择题
He asked Tom whether these islands ______ to that country.
A．belonged
B．belong
C．are belonged
D．have belonged
单项选择题
He thought the painting was of little ______, so he let me have it for only ten dollars.
A．price
B．cost
C．value
D．expenses
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