Every possible means _______ to prevent the crash , but the computer doesn’t still work．
#4644
A
is used
B
are used
C
has been used
D
have been used
推荐题目
Jane was asked a lot of questions, but she didn’t answer ______ of them.
#4944
A
other
B
any
C
none
D
some
As _______ unemployment is very high at the moment, it’s very difficult for people to find _______ work.
#4838
A
the, 不填
B
不填，不填
C
the, a
D
an, the
I’ve had such a fun time, reading Harry Potter with my friend, __________we are both sad that it has come to an end.
#4724
A
which
B
that
C
what
D
as