Question

He knows nothing about it,so he can't help__any of your work

A doing
B to do
C being doing
D to be done
选什么，帮我分析一下。谢谢诶~~

Answer 1

B
chelp (to) do sth.的用法而已。这个好像容易错选为A，理解为can't help doing sth.情不自禁/忍不住做某事，不过在前面已经限定住He knows nothing about it，所以不可能是A。

Answer 2

选B，因为那是不能帮助做某事的意思！！！can't help doing sth.情不自禁/忍不住做某事，

Answer 3

是A吧。can't help doing/can't stop doing是情不自禁做某事。固定搭配吧~~~~~~~