A.two-third,need
B.two-thirds, needs
C.two-thirds,need
D.second-three, need
A.is
B.has
C.have
D.are
开始考试点击查看答案A.are
B.were
C.is
D.was
开始考试点击查看答案A.knows
B.know
C.has known
D.is to know
开始考试点击查看答案A.came
B.comes
C.come
D.is coming
开始考试点击查看答案A.have used
B.has used
C.has been used
D.have been used
开始考试点击查看答案A.has involved
B.has been involved
C.have been involved
D.have involved
开始考试点击查看答案A.refers to
B.referred of
C.refer to
D.refers about
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