“Do you think he is lazy? “I so once, but I don’t now. A. may have thought B. ca
来源：网络
时间：
推荐文章
“Do you think he is lazy?” “I _________ so once, but I don’t now.”
A. may have thought B. can have thought C. may think D. might think
试题答案
A
解析:
从答话人的语境可知，空格处的意思“曾经这样想过”，即对过去情况作推测，故应用“情态动词+动词完成式”；又因为 can 表推测不用于肯定句，故 选A。