Every possible means _____ to prevent the air pollution, but the sky is still not clear.
#85634
A
is used
B
are used
C
has been used
D
have been used
推荐题目
Where to get the materials and how to get them ________ at the meeting.
#86329
A
have not discussed
B
have not been discussed
C
has not discussed
D
has not been discussed
Since then, finding ways to grow more peanuts ______ his life goal.
#85969
A
has been
B
were
C
was
D
have been
The brown trousers _______ 70 dollars. And that white pair of trousers _______ 80 dollars.
#43902
A
is; is
B
is; are
C
are; are
D
are; is
— Each of the students, working hard at their lessons, ______the book. — So have I.
#86262
A
is reading
B
has read
C
reading
D
reads