单项选择题

Don't ______. I can help you with the typing.

A．matter
B．care
C．worry
D．concern
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单项选择题
You can drive your own car ______ you have passed the driving test.
A．even if
B．as if
C．now that
D．so that
单项选择题
This novel is worth reading, because it gives a detailed description of the historical ______ in 1949.
A．accidents
B．cases
C．events
D．things
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