In the past several weeks, many cities in Northern China from heavy fogs and severe cold.
#99857
A
had suffered
B
have been suffering
C
were suffered
D
suffered
推荐题目
Rainforests __________ and burned at such a speed that they will disappear from the earth in the near future.
#102777
A
cut
B
are cut
C
are being cut
D
had been cut
The hotel wasn’t particularly good. But I ________in many worse hotels.
#99891
A
was staying
B
stayed
C
would stay
D
had stayed
—Why! Where's my passport? Maybe I left it on the plane. --My Goodness! You ____________ things behind.
#104242
A
had never left
B
didn't leave
C
never left
D
haven’t left
__________ to sun, rain and wind for a long time, the stone split（裂开）.
#101764
A
Being exposed
B
Having exposed
C
Exposed
D
To expose