单项选择题

You’d better go now, （） you’ll miss the next train.

A. if
B. or else
C. or not
D. unless

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单项选择题
Had you worked harder．you（）a lot more．

A．will learn
B．will have learned
C．would learn
D．would have learned
单项选择题
Portuguese is quite （） Spanish.

A. similar
B. similar from
C. similar to
D. similar with
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