单项选择（每题1分）The stones each _____ as much as two tons.
#86045
A
weighs
B
are weighed
C
weigh
D
is weighed
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When the injured ______to the hospital,they came to ______.
#86295
A
was rushed;life
B
were rushed;life
C
rushed;lives
D
were rushed;lives
Every possible means ______ to prevent the air pollution, but the sky is still not clear.
#86302
A
is used
B
are used
C
has been used
D
have been used
When and where to go for the on-salary holiday ______ yet.
#86301
A
are not decided
B
have not been decided
C
is not being decided
D
has not been decided