Simon's mom won't let him go out unless(除非) he promises _________back before 10 o'clock tonight. A. ...
2022-09-26 12:21:51 32次 广东省江门市2018-2019学年七年级第二学期3月月考英语试卷 单选题 反馈错误 加入收藏 正确率 : 100%
题目内容：
Simon's mom won't let him go out unless(除非) he promises _________back before 10 o'clock tonight.
A. to be B. be C. is D. was
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