—The window is dirty.—I know. It ______ for weeks.
#102943
A
hasn’t cleaned
B
didn’t clean
C
wasn’t cleaned
D
hasn’t been cleaned
推荐题目
In no time ________ smoke coming out of the house.
#101549
A
did we see
B
we saw
C
are we seeing
D
we see
—Your colleague is speaking English with fluency.—It's no wonder．She ____ in the UK for a year as a visiting professor
#100404
A
worked
B
has worked
C
had worked
D
has been working
---Do you know the great changes happening in our village at all?---No, it’s the first time I ________ here.
#103184
A
was
B
came
C
have been
D
am coming