问题描述：
帮忙解答一道英语介词单选题!
--Can I help you?
--I'd like to buy a present for my father's birthday,____at a proper price,but of great use.
A.that
B.one
C.anyone
D.everything
就解释下A怎么不对呢?
--Can I help you?
--I'd like to buy a present for my father's birthday,____at a proper price,but of great use.
A.that
B.one
C.anyone
D.everything
就解释下A怎么不对呢?
问题解答：
我来补答展开全文阅读