—What were you doing when we were playing basketball yesterday afternoon?
—I ______ the classroom.
A. was cleaning B. cleaned C. will D. clean
______ our teacher was ill, ______ she still came to our class to teach us.
A. Although; but B. Though; but
C. Although; / D. If; although
—Could I borrow your camera(照相机)?
—______, but please give it back by Saturday.
A. I’m sorry B. Certainly not
C. No, thanks D. Of course
I won’t go to the party tomorrow ______ Lin Tao invites me.
A. if B. unless C. as soon as D. so that
Jack ______ live with his grandparents, but he doesn’t now.
A. used to B. is used to
C. was used to D. use to
It’s a bad habit to ______ what you can do today until tomorrow.
A.write down B. put off
C. give away D. worry about
