-- Has your elder brother returned from Africa yet?
-- Yes, but he _________ here for only three days before his company sent him to Australia.
A.was | B.has been | C.will be | D.would be |
—Why does the lake smell terrible?
—Because large quantities of water __________.
A.have polluted | B.is being polluted |
C.has been polluted | D.have been polluted |
Progress __________ so far very good and we are sure that the work will be finished on time.
A.was | B.had been |
C.has been | D.will be |
For many years, people __________ electric cars. However, making them has been more difficult than predicted.
A.had dreamed of | B.have dreamed of |
C.dreamed of | D.dream of |
—I'm sorry, but I don't quite follow you. Did you say you wanted to return on September 20?
—Sorry, I __________ myself clear. We want to return on October 20.
A.hadn't made | B.wouldn't make |
C.don't make | D.haven't made |
I have to see the doctor because I __________ a lot lately.
A.have been coughing | B.had coughed |
C.coughed | D.cough |