I don't like _ when people talk with their mouth full.

I don't like _ when people talk with their mouth full.
I don't like _ when people talk with their mouth full.

I don't like _ when people talk with their mouth full.
I don't like it when people talk with their mouth full
it指代后面的事情
我不喜欢别人说话时嘴巴含着东西.