单项选择题

________ their country has plenty of oil, ours has none.

A．While
B．Where
C． When
D．Unless
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单项选择题
________, he’ll make a first-class tennis player.
A．Giving time
B．To give Time
C．Given time
D．Being given time
单项选择题
Can you ________ the three mistakes in this paragraph
A．turn out
B．bring out
C．call out
D．pick out
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