John'sscoreonthetestisthehighestintheclass;he____lastnight.
A、muststudyC
「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must have done 这一句型结构。
Ininternationalmatches,prestigeissoimportantthattheonlythingthatmattersistoavoid_____.
Hesetupinbusiness（）hisownandwasverysuccessful.
IfonlyI_____playtheguitaraswellasyou!
Thecompositionscontainedsofewerrorsthattheteachergotthestudents_____oneanother’spapers.
MissGreenwas____$100fordrivingafterdrinking.
