China's icebreaker Xuelong  ______  by heavy floes since Friday after rescuing passengers on a Russian vessel stranded in Antarctica.
#99668
A
has been trapped
B
had been trapped
C
has trapped
D
was trapped
推荐题目
The stars who advertise some false medicine _____ for the deaths caused by the medicine.
#101967
A
are to blame
B
are going to blame
C
are to be blamed
D
should blame
 ----- I’m going to the States. ----- How long ______ you ______ in the States?
#104148
A
are; stayed
B
are; staying
C
have; stayed
D
did; stay