题干

Just ________ the past 100 years and you’ll discover that a mistake can sometimes be a good thing.
A.look up toB.look forward to
C.look back onD.look down upon
上一题 下一题 0.65难度 单项选择 更新时间:2019-03-20 11:10:16

答案(点此获取答案解析)