the help of my classmates, I’ve improved my English.
A. By B. With C. Under D. For
It is not polite to those persons in trouble.
A. laugh to B. laugh with C. laugh of D. laugh at
I’ll ring you up as soon as he .
A. arrive B. arrives C. will arrive D. arrived
---A: How much time did you _____working out the plan? ---B: Two weeks.
A. spend B. cost C. pay D. take
How long the film ?
A. did ; begin B. has ; begun C. has ; been on D. has ; been
He must be in the room, because the light in the room is .
A. in B. on C. off D. open
