◎ 题干
It ______ usually ______ at this time of year, but today it is raining heavily.    

A. is; raining    
B. won't; rain    
C. has; rained    
D. doesn't; rain
◎ 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“It ______ usually ______ at this time of year, but today it is raining heavily. [ ]A. is; raining B won't; rainC. has; rained D. doesn't; rain…”主要考查了你对  【实义动词】【助动词的单数第三人称形式】  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。