He gave up _______ two years ago. That’s to say, he is a non-smoker now.A. smoke B. smoking C. to smoke
It’s _____ turn _____ now.
I can’t mend the car your help.
—_______are they doing? 一They are running.
一Do you have_______pens in the pencil case? 一No,I don’t have_______.
.It’s best to plant trees(植树)in_____.