Can you think of some cases___________students know clearly he should listen to the teacher but can’t do that ?

The fire______ at might was still seen ______ the next morning.

Sarah pretended to be cheerful，________nothing about the argument.(2011·全国Ⅱ)

Whatdoes your new English teacher look like?—__________.

The light in tne office is still on. — Oh, I forget _____.[ ]