—What place is it?—Haven’t you seen that we ________ back where we ________ ?
#104764
A
were;had been
B
are;were
C
were;have been
D
are;had been
推荐题目
The thief______ when he was stealing a wallet from a woman. 
#104328
A
happenedtonotice
B
wastakenplacetonotice
C
washappenedtobenoticed
D
happenedtobenoticed
New technology ______ to make sure that the cars, taxis, buses and trains we use ______ the air.
#104707
A
is used; not to pollute
B
has used; is not polluted
C
is being used; do not pollute
D
has been used; to pollute