Tom ________ in the library every night over the last three months.(2011·北京)
#63775
A
works
B
worked
C
has been working
D
had been working
推荐题目
A major search has been_____ for a Malaysian Airlines jet with 239 people on board after it lost contact flying from Kuala Lumpur to Beijing.
#63752
A
identified
B
launched
C
substituted
D
dissolved
— Alvin，are you coming with us?—I'd love to，but something unexpected ________.
#63769
A
has come up
B
was coming up
C
had come up
D
would come up
Years of fighting have ______ the area ______.
#63754
A
remained; in ruins
B
left; in ruins
C
remained; in ruin
D
left; in ruin
Mary said that she ___________ London．
#63780
A
has never gone to
B
has never been ,to
C
had never been to
D
had never gone to
My study of biology has ______ much of my spare time, but it has given me a great deal of enjoyment.
#63787
A
taken off
B
taken down
C
taken up
D
taken away