.．When Icame into the classroom , I found him _______ with his study.

What he said is not to the point _____ we should focuson constructing a harmonious society.

haven’t got the service advertised ontheir website, they you have _____ to complain about it

My mom once worked in a very small village school, which is__________only on foot.

We have to stop talking here outside. Listen, _____!—Hurry up, or we’ll be late.