she is very busy,she is very willing to help you,______ A .but B.if C .though D.althought为什么but 不行

问题描述:

she is very busy,she is very willing to help you,______ A .but B.if C .though D.althought
为什么but 不行

C
though 表示转折

though 在这里当然而讲,这里也只有他可以用在句尾