It’s the office! So you_____know eating is not allowed here.—Oh, sorry.

Though the professor tried his best to explain the difficult question, the students still looked _____.

I can’t help my happy childhood.

I won’t tell the student the answer to the mathproblem until he on it for more thanan hour.

Mr. Bean constantly get into awkward and absurd situations, which greatly amuses audiences _____ their nationalities and culture.