◎ 题干
Someone _____ the tap on, for the water was running over and flooding the bathroom.

[     ]

A. must have left
B. ought to leave
C. should have left
D. need to leave
◎ 答案
查看答案
◎ 解析
查看解析
◎ 知识点
    根据n多题专家分析,试题“根据实际情况回答下列问题。1. What'syourname?2.Doyouhaveacrayon? 3.What'syourdeskmate'sname? 4.Nicetomeetyou. …”主要考查了你对  【情态动词】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。