It’s widely known that you won’t achieve success _____ you work hard.

This kind of fried chickens sells ______, mainly because it tastes ______.

I want to know if I can smoke here—No, you _________. Could you see the sign “NOSMOKING” there

Kate paid him in advance,which_____ was a mistake.

How well do you know the Opera House —I know the place very well. I Sydney many times.