—May I go swimming this afternoon? — I"m afraid not _______ you have finished yo
题型：不详难度：来源：
—May I go swimming this afternoon?
— I"m afraid not _______ you have finished your homework.| A．if | B．unless | C．because | D．but |
|
答案
| B |
解析
试题分析：句意：今天下午我可以去游泳吗？如果你没有完成作业恐怕不行。A. if如果 B. unless如果不C. because因为D. but但是，根据句意，故选B。 |
举一反三
My uncle knew little about the famous film Queen he saw it yesterday evening.| A．if | B．and | C．until | D．because |
|
— Could we practice playing the guitar in the hall, Sir ?
—No , ___________ you have the principal’s (校长) note. | A．if | B．unless | C．because | D．since |
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| Everyone tells me I"m a good speaker, ______ I really don"t like speaking in public. |
Jim was watching a late night film______ the television went blank.| A．while | B．since | C．until | D．when |
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She didn’t know__________she could express her ideas clearly when she was invited to speak at the meeting.| A．what | B．why | C．how | D．whether |
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