He have completed his work,otherwise, he wouldn’t be enjoying himself by the sea
来源：网络
时间：
推荐文章
He _______ have completed his work；otherwise, he wouldn’t be enjoying himself by the seaside.
A. should B. must?
C. wouldn’t D. can’t?
试题答案
B?
解析:
此题考查情态动词must表推测的用法。must have done表示“对过去情况肯定的推测”，意为“一定发生了某事”。句意为“他一定完成了他的工作，否则他现在就不会在海边开心的玩了”。