One-third of the area ________ covered with trees. About seventy percent of the trees _______ been planted recently.
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A
is; has
B
is; have
C
are; have
D
are; has
推荐题目
Ninety-six point five percent of the water on the earth ______ sea water.
#86085
A
are
B
is
C
was
D
were
A number of students ______ playing on the ground but I don't know what the exact number______.
#43873
A
are; is
B
are; are
C
is; is
D
is; are
When I was in primary school, I was told that the earth ______around the sun.
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A
had travelled
B
would travel
C
travels
D
travelled