John's score on the test is the highest in the class ; he____last night.
C
「句意」约翰的考试分数全班最高;他昨天晚上一定学习了。
「难点」表示对过去某一动作行为的猜测须要用musthavedone这一句型结构。
Thebackgardenofourhousecontainsalawn，（）verypleasanttositoninsummer.
If not _____with the respect he feels due to him, Jack gets very ill-tempered and grumbles all the time.
The compositions contained so few errors that the teacher got the students _____ one another ’s papers.
Whataniceday!Howaboutthethreeofus_____awalkintheparknearby.