If we _________ now to protect the environment, we’ll live to regret it. 
#100580
A
hadn’t acted
B
haven’t acted
C
don’t act
D
won’t act
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She’s tired of acting, and she _______ changing for a new job, but she hasn’t made up her mind yet. 
#102088
A
had considered
B
has been considering
C
considered
D
is going to consider
The TV set he _________ works well now. 
#104986
A
has repairing
B
having repaired
C
has been repaired
D
has had repaired
Stefan ________ from heart attack for more than ten years, but now he’s healthy and energetic.
#100871
A
had suffered
B
suffered
C
has suffered
D
has been suffering
More than twenty years____________since he came to teach in this school, and every student and every parent_____him.
#102501
A
have passed,like
B
has passed,likes
C
have passed,likes
D
has passed,like