Question

David has been away for more than 25 days. I miss him very much.you know ,25days___

A,is B isn' t C are D aren't

Answer 1

一David
has
been
away
for
more
than
25
days.
--I
miss
him
very
much.You
know，25
days
short.
A.is
B.isn’t
C
are
D.aren’t
答案B
本题题意为“David已经离开超过25天了”“我们非常想念他，你知道，25天并不短。”时间、金钱作主语，谓语动词be要用单数形式，因此答案为B。