--David has been away for more than 25 days． --I miss him very much．You know，25 days short．
#43560
A
is
B
isn’t
C
are
D
aren’t
推荐题目
Our school had about 20 notebook computers but only one-forth_____used regularly. Now we have 50 working all day long.
#86297
A
is
B
are
C
was
D
were
He’s got himself into a dangerous situation _____ he is likely to lose control over the plane.
#86229
A
where
B
which
C
while
D
why