Although your son made some mistakes, he worked hard at his lessons. You shouldn’t be hard ______ him.
—How do you deal with the disagreement between the company and the customers? —The key ___ the problem is to meet the demand ____ by the customers.
. The meeting ___ over, I found her ___ at the desk and ____ to the music.
There were signs here and there, _____ people to look out for ___rocks.
From his ___ voice, I have to say that you are really ____.
—Why did the girl spend the whole day __ up in her room, ____? —She failed in the college entrance examination.