[ 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:
Nouns › ViewThis team is terrible at not being terrible.
A. abstract
B. proper
C. compound
D. collective
Conjunctions › View
There is a continuing problem with trade in endangered species; ——— there are now laws to prohibit such activities.
A. In case
B. However
C. As regards
D. In spite of
E. More than
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
