[ Perfect Modals ]
He didn’t answer the phone. He ____ been sleeping at that time.
A. might have
B. should have
C. must have
D. can’t have

Random Topics:
Future Tenses and ModalsAdverb or AdjectiveFirst ConditionalsTenses of VerbsEnglish MorphosyntaxVerb Tenses and ModalsPassive Voice & TensesConditional and SubjunctiveObject PronounModal Auxiliary VerbsOther quiz:
Modals › ViewYou ____ forget to take your malaria medication while your are in the tropics.
A. must not
B. must
Grammar › View
Correlative Conjunction: It makes no difference to me_________we watch a movie__________play a board game.
A. both/and
B. not only/but also
C. whether/or
D. either/or
Grammar: was/were › ViewJoanne and Winnie ______ swimming in the pool.
A. was
B. were
Vocabulary › View
Driving at high speeds is ———- in our neighborhood.
A. edible
B. adventurous
C. forbidden
