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三个简单的大学英语语法题

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三个简单的大学英语语法题
1.I'll take down your name and address in case you ____ as a witness.
A. are needed B. will be needed C. need D. were needed
2.Thank you for your cooperation. I'm really sorry to ____ your valuable time.
A. take B. be taking C. have had taken D. have taken
3.He listened to me ____ what Mr. Smith had said the day before.
A. to repeat B. to be repeated C. to repeating D. repeat
请附上答案和解释 多谢!
答案是B C D 为什么?
三个简单的大学英语语法题
A
D
B