— 　　　 times did you do exercise last week?   — Twice.

We will give you a good price ________ you are thinking of buying it.

Simon’s shirt is the same size ___________ mine.

—Ipreferspeaking to listeningin English learning.—Oh, really! I think you should be good at ______ of them. 

______ many children like KFC, I think they’d better try not to eat it too often.