This is____ a difficult problem ____ all of us can't work it out.
A. such; that B. so; that C. such; as D. so; as
Only when ____in the afternoon _____able to leave.
A. the match was over; they were B. was the match over; were they
C. was the match over; they were D. the match was over; were they
---- I usually take a walk at night.
---- ___ do that.
A. Better not B. You'd better not to C. You hadn't better D. Best not to
Look at the trouble I am in! If only I ____your advice．
A. followed B. would follow C. had followed D. should follow
On the closet _____ a pair of trousers his parents bought for his birthday.
A. lying B. lies C. lie D. is laid
Professor Smith, along with his assistants, __ on the project day and night to meet the deadline.
A. work B. working C. is working D. are working
