单项选择 适中0.65 引用3 组卷219
To make your DIY better, you should not start ________ you get all the tools ready.
A.when | B.while | C.before | D.after |
20-21八年级上·江苏苏州·期中
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It has been 12 years ________ China hosted the 2008 Beijing Olympic Games.
A.after | B.before | C.in | D.since |
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