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
—I hear Tom ______ playing games recently.—______ no wonder he is easy to feel sleepy in class.
#104344
A
is addicted to；There is
B
addicts；There is
C
addicts；It is
D
is addicted to；It is
—Alice promised me to come round to keep you company today.—But she ________. I've been alone all day.
#99609
A
won't
B
hadn't
C
hasn't
D
doesn't
Generally, students’ inner motivation with high expectations from others ______ essential to their development.
#100600
A
is
B
are
C
was
D
were
After the flood, no house in the village ______,
#104206
A
left standing
B
was left to stand
C
was remained standing
D
remained standing
---We’d like a double room with a view , please.---I’m sorry, but all double rooms with a sea view _____________already.
#101861
A
were reserved
B
had been reserved
C
have been reserved
D
have reserved