— Amy’s library book is lost? —She has to pay for it.A. In the endB. What ifC. Instead ofD

— Amy’s library book is lost?
—She has to pay for it.
A. In the end
B. What if
C. Instead of
D. Why not

A. In the end(答案→)B. What ifC. Instead ofD. Why not解析：句意：如果艾米的图书馆的书丢失啦? 她必须为它付款。In the end 最后；What if假使…将会怎样；Instead of 代替；Why not为什么不。由She has to pay for it知，前文是提出一种假设，故选B。

就是这个解释