题干

I can’t believe that they ______ in the mountains for three days now! They must be so frightened.
A.have been missingB.have got lost
C.have lostD.have missed
上一题 下一题 0.64难度 单项选择 更新时间:2015-06-23 09:39:23

答案(点此获取答案解析)