Miss. Gao _______ in the library for three years. But now she is a teacher.
#102018
A
worked
B
has worked
C
had worked
D
has been working
推荐题目
Computers ____ in offices and homes since 1970s.
#100256
A
have been used
B
had been used
C
was used
D
has been used
—Have you been teaching here since graduation? —No, I _____ on a farm for five years．
#102826
A
had worked
B
have worked
C
was working
D
worked
Since the epidemic appeared last winter, it ______ about a hundred lives.
#103370
A
takes
B
took
C
has taken
D
will take
No decision _ about any future plan until we have done some research into the student preference．
#101572
A
has been made
B
is made
C
is being made
D
will be made
—When did the computer crash?—This morning，while I ________ the reading materials downloaded from some websites.(2012·福建)
#99575
A
have sorted
B
was sorting
C
am sorting
D
had sorted