(2013·高考新课标全国卷Ⅰ)If we________now to protect the environment,we’ll live to regret it.
#99713
A
hadn’t acted
B
haven’t acted
C
don’t act
D
won’t act
推荐题目
She was surprised to find the fridge empty; the child _____ everything!
#102652
A
had been eating
B
had eaten
C
have eaten
D
have been eating
Once you _________ used to the  weather here, you ________ to live here.
#103445
A
get; will probably like
B
will get; will probably like
C
got; will probably like
D
had got; had probably liked
--- What did the manager say at yesterday’s meeting?--- So you______ to him carefully.
#100791
A
won’t listen
B
weren’t listening
C
hadn’t listened
D
haven’t listened
Computers          in offices and homes since 1970s.
#99298
A
was
B
had been used
C
have been used
D
has been used