A number of students        trees every year and the number of them        increasing.
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A
plant; is
B
plants; is
C
planting; is
D
planting; are
推荐题目
All but Tom ___that film before.
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A
has been
B
have seen
C
must see
D
had seen
That building is now a supermarket. It ______ a cinema.
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A
was
B
is used to be
C
used to be
D
would be
— Would you mind if I sing here?—           . Look at the sign. It says “Be Quiet”.
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A
Of course not.
B
Better not.
C
Not at all.
D
I don’t mind.