◎ 题干
Ladies and gentlemen, please fasten your seat belts. The plane _____ .
[     ]
A . takes off    
B. is taking off    
C. has taken off    
D. took off
◎ 答案
查看答案
◎ 解析
查看解析
◎ 知识点
    根据魔方格专家分析,试题“Ladies and gentlemen, please fasten your seat belts. The plane _____ .[ ]A . takes offB. is taking off C. has taken offD. took off …”主要考查了你对  【现在进行时】  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。