The wonderful time they had been looking forward ____ at last.
A. to arrive B. to arrived C. to arriving D. should arrive
It was __ _ that he had to ask for help.
A. such big a job B. so a big job C. so big a job D. a such big job
Polar bears live mostly on __________ sea ice, which they use as __________ platform for hunting seals.
A. a; a B. a; the C. 不填; a D. the; 不填
Is it John that is being scolded in the manager’s office?
No. It ______ be him. I saw him on the way just now.
A．mustn’t B．won’t C．can’t D．may not
The question came up at the meeting_____ we had enough money for our research．
A．that B．which C．whether D．if
Twenty of the students will have sports, the rest ___ studying here
A.are B.is C.were D.was
