Shirly had to buy _____ these CDs because she didn't know wh

Shirly had to buy _____ these CDs because she didn't know wh Shirley had to buy ____ these CDs becuase she didn't know wh Shirley had to buy ___ these CDs because she didn't know whi 1、I had to buy _____ these books because I didn't know which Tom had to buy ___these CDs because he didn't know which one 英语单项选择（解析）I had to buy ( )these books becauce i didn't know I had to buy __of the books because I didn't know which one I had to buy ____ of the twenty books because I didn't know I didn’t know what (改为which )one to buy为什么这样改,wh At first,she didn't know which one to buy,but finally she th 10、阅读理解.Einstein didn't want to buy a new coat because _____ Tom had to buy __these CDs because he did not kno w which on