While every possible means __________ to prevent the river pollution, the river in my hometown has still not been restored to its past beauty.
#100447
A
is tried
B
are tried
C
has been tried
D
have been tried
推荐题目
—Where is Mr Smith?—He in prison for more than two months.
#102721
A
has been
B
has been sent
C
has been thrown
D
has been put
Clare finally decided to leave the company she ____ for since she graduated from university.
#102046
A
would work
B
has worked
C
was working
D
had worked
-----Did you watch the movie After Shock last night ? ----- I had planed to , but it _______ hard all the time .
#101091
A
is raining
B
was raining
C
had rained
D
has rained
I________ an important conference at 10 o’clock this Sunday morning.
#100889
A
will have attended
B
will be attending
C
have been attending
D
have attended