According to the survey, two thirds of the area__________covered by trees now and 90% of the population__________contributions to the Greening Project in the city.
#102395
A
is ; has made
B
are; have made
C
is; have made
D
are; has made
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All possible means ____ to prevent the air pollution, but the sky is still not clear. 
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A
is used
B
has been used
C
are use
D
have been used
The vase ____easily. Be careful when you handle it.
#102727
A
will be broken
B
will break
C
is broken
D
breaks
He _______ Alice for ten years.
#100485
A
married to    
B
has married to
C
has married   
D
has been married to