______ is known to us is that tobacco contains nicotine and other harmful products, so you should give up smoking.
The factory was built in a secret place, around _________ high mountains.
She wrote a month ago, ______ we’ve heard nothing.
I have a lot of books, half of ______ novels.
The old house, in front of _________ there is an apple tree, is _________ I used to live.
Houston Rockets, ______ led by as many as 10 points in the first half, has dropped three straight after winning eight matches.