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
. All of the guests ___________ by 9 o’clock , but the host _____________ until 15 minutes later .
#104291
A
arrived; didn’t turn up
B
had arrived; didn’t turn up
C
arrived; hadn’t turned up
D
had arrived; hadn’t turned up
The new smart robot by Sony, with a camera “eye” on its head, can __________ colors and human faces.
#99653
A
organize
B
recognize
C
determine
D
judge
By the middle of the 21st century, the vast majority of the world’s population _____ in cities rather than in the country.
#101424
A
are living
B
will be living
C
have lived
D
will have lived
--Is your uncle a pilot? --Yes. He _________ four days a week and has been to many places.
#99518
A
travels
B
travelled
C
has travelled
D
had travelled
My father told me that we wouldn’t go anywhere this summer holiday if I ___pass the examination.
#103462
A
hadn’t
B
wouldn’t
C
didn’t
D
hasn’t