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before的用法(2)
She said she had read the novel long before. 她说她很久以前就读过这部小说。
That happened long before. 那件事发生在很久以前。
[巩固练习]
1. It _______ long before we _______ the result of the experiment.
A. will not be; will know B. is; will know
C. will not be; know D. is; know
2. It was about five hours _______ the workers shipped all the goods.
A. since B. when C. after D. before
3. It was evening _______ we reached the little town of Winchester.
A. that B. until C. since D. before
4. Scientists say it may be five or six years _______ it is possible to test this medicine on human patients.
A. since B. after C. before D. when
5. It was some time ____ we realized the truth.
A. when B. until C. since D. before
Keys:1-5: CDDCD
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