Can you tell me-----the birthday gift you bought for me?----处应填A.how much did you pay forB.how much you paid for说明理由,并且说明这里填的是什么从句

问题描述:

Can you tell me-----the birthday gift you bought for me?----处应填
A.how much did you pay for
B.how much you paid for
说明理由,并且说明这里填的是什么从句