He is only too ready to help others, seldom, ______, refusing them when they turn to him.
A. if never B. if ever C. if not D. if any
— How’s your tour around the North Lake? Is it beautiful?
— It ______ be, but it is now heavily polluted.
A. will B. would C. should D. must
The house could fall down soon if no one ______ some quick repair work.
A. does B. has done C. is doing D. had done
Right now you can pay ______ you had to several years ago for a cool computer.
A. one third as much as B. as one third much as
C. as much as one third D. as much one third as
The magazine is a(n) ______ number. You can take it out of the reading room.
A. back B. past C. old D. former
It is the second time that you have been late, ______?
A. haven’t you B. isn’t it C. is it D. have you
