This is one of the happiest days ____ spent in my life.
#85594
A
that have ever been
B
that has never been
C
which was ever
D
that had been
推荐题目
The sunglasses _____ expensive. How much ___ the banana ice cream?
#44173
A
are;is
B
are;are
C
is;are
D
is;is
You should never base anything on a theory that _________ impractical in practice.
#86010
A
is proved
B
prove
C
proves
D
proved
Our school has about 100 computers, but only sixty percent ____ used regularly.
#85661
A
is
B
are
C
was
D
were
Every possible means ________ to prevent the air pollution，but the sky is still not very clear.
#85546
A
were using
B
have used
C
has been used
D
was used