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
—Can I pay the bill by check?—Sorry，sir．But it's the management rules of our hotel that payment be made in cash．
#62255
A
shall
B
need
C
will
D
can
… Come to supper with us, Peter. … Great! I _______ bring a bottle of wine.
#62452
A
will
B
can
C
may
D
must
The art exhibition is really worth _______，and you’re sure to learn lot from it.
#77411
A
visit
B
to visit
C
visited
D
visiting