A fire broke out in the neighborhood last night. By the time the firemen arrived, it    . 
#101011
A
had been put out
B
would put out
C
has been put out
D
was putting out
推荐题目
Prices____ all the time and no one knows when they         stable.
#101890
A
are going up; become
B
have been going up; will become
C
have gone up; will become
D
have been gone up; become
Quantities of water ________for cooling in the only one of the factories that ________steel.
#102723
A
has been needed;produces
B
have been needed;produce
C
is needed;produce
D
are needed;produces