The boy the first prize, but he was so careless as to make a foolish mistake.
A. must have gained B. need have gained
C. could have gained D. shall have gained
My wife sometimes _____ something she has long been looking for. That’s why she enjoys window shopping.
A. looks up B. looks for C. picks up D. picks out
High-speed trains which travel through my home town ______ up to 250 km per hour make it a small world.
A. with B. against C. at D. over
The necklace the woman bought is , because it is made of glass.
A. priceless B. worthwhile C. valuable D. worthless
—Sorry, I didn’t hear the door bell ring.
—Your bell . Perhaps it needs repairing.
A. never worked B. is never working
C. never works D. had never worked
———It was a green dinner. _______
———Thanks. But it really only took an hour.
A. You must be tired. B. I enjoyed it very much.
C. You must have spent all day cooking. D. I have never had it before.
