A.are,are
B.is,is
C.is,are
D.are, is
A.have been washed away
B.is washed away
C.was washed away
D.have washed away
开始考试点击查看答案A.has been completed
B.are completed
C.have been completed
D.has completed
开始考试点击查看答案A.refers to
B.referred of
C.refer to
D.refers about
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.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 been
B.have been
C.has
D.are
开始考试点击查看答案A.have
B.having
C.to have
D.has
开始考试点击查看答案A.are
B.will be
C.is
D.are going
开始考试点击查看答案A.is
B.are
C.am
D.be
开始考试点击查看答案A.depends
B.dependent
C.depend
D.depending
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