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[判断题]
There have been several minor conflict between the two countries over the past decade.()
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A.could have been
B.should have been
C.must have been
A.have been
B.has
C.have
D.has been
A、has been done
B、will have been bone
C、will do
D、would have done
A.were to be killed
B.are said to have been killed
C.said to have been killed
D.are said to kill
The United Nations ______ world organization.
A) are B) is
C) have been D) has been
A.has been
B.will be
C.will have been
D.would have been
I have been to Beijing ______ times.
A.five hundreds B.hundred C.hundreds D.hundreds of