What can I do for you?—I’d like to buy a present for my son, ______at a proper price but of great use

. —I’m sorry. I _________ at you the other day. —Forget it. I was a bit out of control myself.

It is important for us___________ Chinese history.

In the dark forests ,some large enough to hold several towns.

“We can’t go out in this weather,” said Bob, ______ out of the window. [ ]