He loves his parents deeply, ________ are very kind to him.

Sally failed in this math test. She is very sadnow.—Let’s go and_______.A．laugh at her

The _________ at the military academy is so rigid that students can hardly bear it.

Look! There are a lot of children onthe playground.

Mr. Smith, why are you always asking me to do the difficult work?—Because you _______ do such a thing and nobody else is fit for it.