They____on the program for almost one month before l was arranged to help them. Now, we____on it as no result has come out.
#99542
A
had been working: are still working
B
had worked; were still working
C
have been working; have worked
D
have worked; are still working
推荐题目
—Peter, you look so tired and wet all over!—Yes, all afternoon I ________ football on the playground.
#102138
A
am playing
B
have been playing
C
played
D
have played
There is too much rain these days, isn’t there ? —Yes, it ___ for a week.
#101182
A
has been raining
B
had been raining
C
was raining
D
rained
.—_______ John this week?—Yes.—Where _______ him?—In the library.
#104288
A
Did you see; did you see
B
Have you seen; did you see
C
Do you see; have you seen
D
Have you seen; have you seen
I won’t tell the student the answer to the math problem until he ______ on it for more than an hour.
#104700
A
has been working
B
will have worked
C
will have been working
D
had worked