Three-fourths of the surface of the earth＿＿＿sea．
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A
is
B
are
C
were
D
has been
推荐题目
The number of people invited ____________ fifty, but a number of them __________ absent for different reasons.
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A
were; was
B
was; was
C
was; were
D
were; were
The girl sitting by the window is the only one of the students who _______ from the countryside in our class.
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A
was
B
were
C
is
D
are
There an English film in the cinema tomorrow.
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A
are going to have
B
is going to have
C
is going to be
D
are going to be
There _________ a computer in everyone's house in the future.
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A
will have
B
will has
C
will be
D
is
What the science teacher does and says of great importance to college students.
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A
are
B
is
C
were
D
was