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
from the top of the tower ,the south foot of the mountain is a sea of trees.
#102030
A
Seen
B
Seeing
C
Having seen
D
To see
—Seems you are quite familiar with Russia.—That is because I _________ the country in 1999.
#103907
A
have visited
B
was visiting
C
had visited
D
visited
Although her disease her eyesight and forced her to leave the dance floor, she refuses to fall into self-pity.
#102179
A
has affected
B
affected
C
affects
D
had affected
--- Why does the lake smell terrible?--- Because large quantities of water _________.
#101273
A
have polluted
B
is being polluted
C
has been polluted
D
have been polluted
Measures _______ to raise the employees’ salaries if the prices are rising all the time.
#99223
A
had been taken
B
have been taken
C
will be taken
D
were taken