Up to now, they _________ a good way to solve that problem.
#102584
A
didn’t find
B
can’t find
C
hadn’t found
D
haven’t found
推荐题目
----- How long ________ in Guilin? ----- For two weeks. I’m going to some places of interest there.
#101791
A
did you stay
B
do you stay
C
are you staying
D
have you stayed
When he was alive, the old scientist used to say that knowledge ＿＿from practice and he gained his experience by doing a lot of practical work.
#104398
A
was coming
B
had come
C
comes
D
would come
Fei Junlong’s wife and his child ________ to see him off before the launch, but they failed because of the rules.
#104310
A
hope
B
had hoped
C
have hoped
D
were hope
–There will be a talk show this time tomorrow. Would you go with me ? --I’m sorry,but I _____an important meeting.
#100075
A
have attended
B
will be attending
C
am about to attend
D
would attend
—Did Alan enjoy seeing his old friends yesterday?—Yes,he did.He___his old friends for a long time.
#104070
A
didn’t see
B
wouldn’t see
C
hasn’t seen
D
hadn’t seen