1. —What do you think of their school?
—It's really beautiful. But I don't think their school is as big as________.
A. ours B. us C. we D. our
2. He used to be________, but now he likes to meet and talk to new people.
A. busy B. strong C. tall D. shy
3. When I got there, he________them to dance.
A. is teaching B. teaches C. was teaching D. taught
4. Work hard, ________ you will succeed sooner or later.
A. and B. but C. also D. or
5. —The light in the office is still on.
—Oh, I forgot to________.
A. turn it off B. turn it on C. turn it up D. turn it down