What do you think _____ if he knew the matter?
The newly published book, which refers ______ basic English grammar, is ______only for beginners.
. —Shall I give you a ride as you live so far away? —Thank you. .
No one enjoys _______ at.
—Two months ______quite a long time. —Yes, I’m afraid that he will miss lots of his lessons.
My boss hates being interrupted, when he is trying to work.