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.
#62336
A
must have reduced
B
should have reduced
C
may have reduced
D
could have reduced
推荐题目
If you often go to a gallery, it ______ well change forever the way you look at art.
#62805
A
may
B
should
C
will
D
must
—Shall I tell you about it? —No, you _______. Sandy has told me already.
#76752
A
won’t
B
mustn’t
C
needn’t
D
can’t
My sister met him at the Grand Theater yesterday afternoon, so he ________ your lecture.
#63289
A
couldn’t have attended
B
needn’t have attended
C
mustn’t have attended
D
shouldn’t have attended