---Excuse me,but I want to ride your bike to go to the bookshop.

---You ____ have my bike if you don't take care of it.

A．shan’t

B．might not

C．needn’t

D．shouln’t

尾箱的开启必须在（）内。

A、营业室

B、守库室

C、监控视线

D、信用社