By the time he realizes he__ into a trap, it’ll be too late for him to do anything about it.
A. walks B. walked C. has walked D. had walked
------Can those_____ at the back of the classroom hear me?
------- No problem.
A. seat B. sitted C. seated D. sat
Teenagers _____ their health because they play computer games too much.
A. have damaged B. are damaging C. damaged D. will damage
How many pages have you_____ so far? Can you return the book ____ me tomorrow?
A. looked; for B. seen; to C. covered; to D. turned; for
The house rent is expensive. I’ve got about half the space I had at home and I’m paying_____ here.
A. as three times much B. as much three times
C. much as three times D. three times as much
John didn’t choose _____ of the ties and went away without looking at a third one.
A．many B．either C．all D．any
