—I’m sure Andrew will win the first prize in the final.
—I think so. He ________ for it for months.
A. is preparing B. was preparing C. has been preparing D. had been preparing
The teacher stressed again that the students should not ________ any important details while retelling the story.
A. figure out B. let out C. leave out D. pick out
—The guard keeps watch at the gate.
—So he does. Only those knows well could be let in.
A. close; who B. tight; whom C. tight; that D. close; he
He _______ have escaped, but he chose to stay and fight.
A. must B. could C. will D. need
_______, according to the instructions, the medicine, I think, will work on your headache before long.
A. Take B. Being taking C. Taken D. Taking
Only after spending several nights working on the math problem to wonder whether the problem was wrongly set.
A. had he begun B. he began C. did he begin D. began he
