◎ 题干
单项选择。
Yesterday I ______ tired but happy.
[     ]
A. am
B. was
C. is
D. are
◎ 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“单项选择。Yesterday I ______ tired but happy. [ ]A. am B. was C. is D. are …”主要考查了你对  【系动词】【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。