The little boy asked选什么he could go swimming or not

问题描述:

The little boy asked选什么he could go swimming or not
A.if B.whether C.that

B
if 不能和or not 连用为什么不用 that既然用asked "询问”, 肯定有悬而未决的疑云,问题, 而that -从句是肯定的