---Excuse me but I want to ride your bike to go to the bookshop.-You have my bike if y

问题补充：

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

---You have my bike if you don take care of it.

A. shan’t

B. might not

C. needn’t

D. shouln’t

答案：

(答案→)A. shan’t

B. might not

C. needn’t

D. shouln’t

解析：情态动词shall用在第二或第三人称单数中表示：允诺，警告等。