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
-----What’s that terrible noise? -----The neighbours ________ for a party.
#102452
A
have prepared.
B
are preparing.
C
was preparing.
D
will prepare.
--- Is it convenient to you if I call you up at 9 o’clock tomorrow morning? --- I’m afraid not. I _________ a speech then.
#102358
A
was giving
B
will be giving
C
am giving
D
will have given
(2013·江苏，21)Generally，students' inner motivation with high expectations from others________essential to their development.
#99734
A
is
B
are
C
was
D
were
He _____the job well, but he ____so careless.
#104340
A
had done; had been
B
could do; was
C
could have done; was
D
hadn’t done; had been
—Sorry, sir. And you'll let me pay to have your jacket cleaned, won't you?—That's all right. Coffee ________ lasting marks on clothing, I'm sure.
#99475
A
didn't leave
B
doesn't leave
C
hasn't left
D
hadn't left