Every possible means to prevent the air pollution, but the sky is not still clear.
#101886
A
is used
B
are used
C
has been used
D
have been used
推荐题目
— Why are you always yawning, Kathy? —I ______ all night reading Steve Jobs. That’s a fantastic book!
#100293
A
stayed up
B
am staying up
C
stay up
D
will stay up
This passage had many new words and the students could not _______ what the writer meant.
#100558
A
make out
B
make up
C
stand out
D
stand for
They ___ every means, but the engine __ work.
#103984
A
tried; couldn't
B
have tried; won't
C
tried; won't
D
have tried; can’t
—Do you have any plans for Saturday?—To tell you the truth，I have nothing in ______ for Saturday.
#99279
A
head
B
mind
C
heart
D
brain
After Tom had finished some paper work, he ______ interviewing the applicants.
#99535
A
starts
B
had started
C
started
D
has started