A.after
B.while
C.since
D.when
A.when
B.before
C.after
D.since
开始考试点击查看答案A.whether
B.although
C.for
D.so
开始考试点击查看答案A.or
B.and
C.but
D.for
开始考试点击查看答案A.how
B.who
C.what
D.where
开始考试点击查看答案A.As
B.While
C.Until
D.Once
开始考试点击查看答案A.as last
B.in case
C.once again
D.in time
开始考试点击查看答案A.as long as
B.while
C.if
D.even though
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