It is difficult for us to learn a lesson in life _____ we've actually had that lesson.
A, until B, after C, since D, when
2, Boys are _______ girls to be hurt while riding their bicycles.
A, twice likely as B, twice as likely as C, likely twice as D, twice as likely
1, A, until追答
2, B. twice as likely as
谢谢采纳
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