Every possible means ________, but the teacher as well as the students ________ found a solution to the problem yet.
#102485
A
has been tried; hasn’t
B
has tried; haven’t
C
have tried; haven’t
D
have been tried; hasn’t
推荐题目
---- The battery in my cell phone is running low. ---- I _____ that last night before we went to bed.
#101362
A
was noticing
B
have noticed
C
had noticed
D
would notice
(2013·河南豫西五校高三质检)To her disappointment, what she had devoted herself to ________ in nothing but failure.
#99604
A
resulting
B
results
C
has resulted
D
resulted
We want to leave this hotel. Perhaps you can __________ us another one
#99029
A
introduce
B
remind
C
recommend
D
suggest
The US President Obama told the students that he ______ by a single mother who were strict with him and wished him great success in his studies.
#103513
A
will have been brought down
B
has been carried out
C
was brought up
D
was about to be cared for
----Does Liu Hua serve in the army?----No,but he ___in the army for three years.
#104193
A
served
B
has served
C
is serving
D
would serve