单项选择 容易0.94 引用4 组卷341
________ you’re invited to speak, you should remain silent at the meeting.
A.Because | B.After | C.If | D.Unless |
2019·江苏·一模
类题推荐
We are often told that we can’t be successful ________ we do everything carefully.
A.unless | B.if | C.while | D.since |
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