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
---Will you read me a story, Mummy? --- OK. You_______have one if you go to bed as soon as possible.
#63399
A
might
B
must
C
could
D
shall
—The similarities between social networks are striking.—That ________ come as no surprise，because they are all products of the Internet.
#62485
A
should
B
shall
C
may
D
must
—_____ I finish the book this week?—No, you ____ . You ____ return it to me the week after next
#75875
A
Need; mustn’t; must
B
Should; shouldn’t; may
C
Mus; needn’t; can
D
Can; don’t have to; must