There are so many kinds of MP3 in the shop we cant decide--- A what to buy B to buy what Cwhich to

问题描述:

There are so many kinds of MP3 in the shop we cant decide--- A what to buy B to buy what Cwhich to
buy D to buy which 请问选哪个,并说明为什么,

c、which to buy
应该是个从句(从美国人那确定的)
which指代Mp3,to buy表意向