问题补充:
—Why didn’t Susan come to school?
—I don’t know. She ill.
A. could be
B. may have been
C. might
D. must have been
答案:
A. could be
(答案→)B. may have been
C. might
D. must have been
解析:本题回答语表示的含义是苏珊可能生病了,所以导致的后果是她未能上学,故用情态动词may+完成时态的结构,故本题选B。
时间:2019-09-30 06:55:12
—Why didn’t Susan come to school?
—I don’t know. She ill.
A. could be
B. may have been
C. might
D. must have been
A. could be
(答案→)B. may have been
C. might
D. must have been
解析:本题回答语表示的含义是苏珊可能生病了,所以导致的后果是她未能上学,故用情态动词may+完成时态的结构,故本题选B。