高一英语语法用所给词的适当形式填空
-Ididn'tknowyouweregoodfriends.
-You___(canhave).Ihaveknownhersinceshemovedhere.Youwerestudyingabroadthen.
-Whereismydictionary?
-Somebody__(musttake)itawaybymistake.
Hedidn'thearthebellring.he__(mustbe)asleep.