Not until the press reported the pollution _________ why the water supply had been cut off.
#81622
A
people did know
B
people had known
C
did people know
D
had people known
推荐题目
So _____ that modern industry cannot develop without it.
#83383
A
electricity is important
B
important is electricity
C
electricity important is
D
important electricity is
Strange as it might be, the suggestion he made we make good use of the equipment is acceptable.
#80774
A
that
B
which
C
why
D
how
--Why didn’t you take part in the school reunion （团聚、重聚）yesterday? --I’m sorry, but not until last night ________ of it.
#83370
A
did I tell
B
was I told
C
I was told
D
I had told
that he was praised by his teachers.
#81482
A
So great progress had he made
B
So great progress he had made
C
Such a great progress had he made
D
Such great progress had he made