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
— Must they clean and tidy the classroom now? — No, they . It after school in the afternoon.
#78237
A
mustn’t; must clean
B
needn’t; must clean
C
mustn’t; need be cleaned
D
don’t have to; can be cleaned
Mr Black be at home because she called me from England just now.
#76189
A
mustn't
B
isn't able to
C
can't
D
may not
—Isn’t Ann’s husband over there? —No, it _____ be him — I’m sure he doesn’t wear glasses.
#62563
A
can’t
B
must not
C
won’t
D
may not
You ______ park here! Don’t you see “No Parking” beside you?
#63201
A
needn’t
B
mustn’t
C
won’t
D
couldn’t