A.if
B.even though
C.unless
D.as long as
A.though
B.whether
C.as
D.since
开始考试点击查看答案A.Although
B.And
C.But
D.So
开始考试点击查看答案A.Otherwise
B.If not
C.But for that
D.Ifso
开始考试点击查看答案A.till
B.or
C.and
D.but
开始考试点击查看答案A.Even if
B.If only
C.While
D.Once
开始考试点击查看答案A.once
B.when
C.if
D.unless
开始考试点击查看答案A.However a serious problem
B.What a serious problem
C.However serious a problem
D.What serious a problem
开始考试点击查看答案A.Until
B.Unless
C.If
D.After
开始考试点击查看答案A.wherever
B.whenever
C.even if
D.asif
开始考试点击查看答案A.as soon as
B.unless
C.as far as
D.until
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