We all know that we ________ our carbon footprint, but I suspect that many people wouldn't be prepared to go as far as Joan Pick, a retired scientist living in south London.
| A.must have reduced | B.should have reduced |
| C.may have reduced | D.could have reduced |
It is widely accepted reported in the western media that the drug ______ is now becoming a leading cause of teenager crimes.
| A.adoption | B.abuse | C.appreciation | D.appeal |
“Boys and girls, you are asked to submit a(n) _______ of about 100 words of the lecture given by Professor Yu tomorrow” , said the teacher.
| A.impression | B.report | C.abstract | D.conclusion |
The windows _____, so you need not wash it again.
| A.is washed | B.was washed | C.have been washed | D.will be washed |
She doesn’t speak ____ her friend, but her written work is excellent.
| A.as well as | B.so often as | C.as much as | D.as good as |
---- How long ____ at this job?
---- Since 1990.
| A.were you employed | B.have you been employed |
| C.had you been employed | D.will you be employed |