In the past, ice used to ______ used to ______ the air in a room.
A.be ;cooling | B.be; cool | C.being; cool | D.being; cooling |
“Aha, you’re a chain smoker!” “Only at home. Nobody _______ that but you.”
A.discovered | B.had discovered |
C.discovers | D.is discovering |
In order to learn the _______ of the family business, Bill took a job as messenger boy in one of the offices.
A.ins and outs | B.dos and don’ts |
C.heads and tails | D.t’s and i’s |
“What’s your opinion on the matter, please?” “Oh, sorry, I _______.”
A.wasn’t to listen | B.haven’t listened |
C.wasn’t listening | D.hadn’t listened |
—Li Lin is very bright and studies hard as well.
—It’s no ______ he always gets the first place in any examination.
A.question | B.doubt |
C.problem | D.wonder |
“I took part in the TOEFL. It was really hard.” “Did you ______ a lot?”
A.Have you studied | B.Did you study |
C.Had you studied | D.Do you study |