Shall we go shopping now?Sorry,I can not.I ---- my shirts.

问题描述:

Shall we go shopping now?Sorry,I can not.I ---- my shirts.
A.wash B.washed C.am washing

因为题目是:Shall we go shopping “now”
由“now”可知这是现在进行时,表示正在进行的动作正在进行中
SO,Apparently,"am washing" 就是由 Be 动词+动名词构成的现在进行时.
所以你的答案是:C.❤