题干

You can only be sure of _____ you have at present; you cannot be sure of something _____ you might get in the future.
A.that; whatB.what; /C.which; thatD./; that
上一题 下一题 0.65难度 单项选择 更新时间:2013-04-12 08:36:39

答案(点此获取答案解析)