单项选择题

Shirley _____a book about China last year but I don’t know whether she has finished it.

A．has written
B．wrote
C．had written
D．was writing
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单项选择题
It isn’t quite _____whether she will take the advice.
A．sure
B．right
C．certain
D．exact
单项选择题
We’ve made some achievements, but there is still a long way _____.
A．going　
B．to go　
C．gone
D．to be gone
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