— Could you tell me ? — Sorry, I don’t know. A. where are my socks B. where were my socks C. where my socks are
He didn’t go to bed _______ his mother came back.
It is ___________ to hold the water.
You must have breakfast, _________ you may have a stomachache.
It is difficult ________me _______ English well. But I’ll study harder.
Don’t swim here ,or you may be __________.