They _________ on the program for almost one week before I joined them, and now we are still working on it as no good results have come out so far.
#103812
A
have worked
B
had worked
C
have been working
D
had been working
推荐题目
—I’d like to buy the kind of cloth which ____ easily.—Will this one ____?
#102701
A
washes; work
B
is washed; work
C
washes; do
D
is washed; do
A highway bridge ______over the river. They hope to finish it next month.
#101922
A
was built
B
is built
C
has been built
D
is being built