◎ 题干
The twins          in Shanghai last week but now they       in Hainan.      
[     ]
A. are ; are                          
B. were ; were      
C. were ; are                        
D. are ; were
◎ 答案
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“The twinsin Shanghai last week but now they in Hainan.[ ]A. are ; areB. were ; wereC. were ; areD. are ; were…”主要考查了你对  【系动词】【一般现在时】【一般过去时】  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。