[ Modal Verbs of Certainty and Possibility ]
You _____ tired. You’ve been sleeping for hours.
A. can’t have been
B. can’t be

Random Topics:
Mixed ConditionalsTime and CalendarSubjunctiveModal Verbs and PermissionPassive Voice, Question Tag, PrepositionsComparative and SuperlativesPrepositions and Phrasal VerbsVerb Forms and PrepositionsDirect and Indirect SpeechActive vs. Passive VoiceOther quiz:
a, an, the, Zero Article › ViewHe served in ____ army for 20 years.
A. A
B. An
C. The
D. –
Grammar › View
__________ car had a breakdown in the middle of the road.
A. He
B. She
C. I
D. His
Past Perfect Tense › ViewWhen Airi _______ at school, she realized she _______ her textbook.
A. Had arrived, forgot
B. Arrived, had forgotten
C. Forgot, had arrived
D. Had forgotten, arrived
Vocabulary › View
He has a very positive __________ on life, and he always sees the bright side of things.
A. outlook
B. hobby
C. personality
D. insight
