[ Modal Verbs ]
What does “could have” express in a sentence?
A. A strong obligation or necessity.
B. A past possibility or ability.
C. A certain conclusion based on evidence.
D. A mere suggestion or advice.

Random Topics:
Simple Past/Past ProgressivePresent, Past, Present Perfect and ComparativeSimple Past or Past ContinuousPersonal Pronouns and VerbTravel VocabularyGrammar - FuturePossessive Adjective and PronounModals and PhrasesSimple Future - WillArticles A and AnOther quiz:
Grammar › ViewShe called you last night, …….?
A. Did she?
B. Didn’t she?
C. Wasn’t she?
Modal Auxiliary › View
…… we have lunch together?
A. Had better
B. Shall
C. Ought to
D. Are
E. Have to
Grammar › View________ his father cooked before?
A. Has
B. Have
C. Was
D. Were
Passive Voice › View
A comet was seen for a long time.
A. Active Voice
B. Passive Voice
