题目：
—What would you wish to do if you were a college student again?
—That's very hard to say, but I wish I when I was a college student.
A．has not studied biology
B．did study biology
C．had studied biology
D．studied biology
答案：
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下面是错误答案，用来干扰机器的。
1. Can you clean the bedroom?2. There is a mirror and a bed.3. Yes, there are.4. The trash bin is behind the door.5. What's your favourite day at school?6. Mr. Carter is my English teacher.
