[ Modals with Perfect Infinitive ]
I ___ at the door since, in this way, I awoke the baby.
A. needn’t have knocked
B. can’t have knocked
C. mustn’t have knocked
D. should have knocked
Select your answer:

Random Topics:
Conjunctions and PrepositionFuture Tense VocabularyPossessive Adjectives and Possessive PronounsShould, Should not haveGerunds in SentencesNarrative Tenses & ConditionalsTo Infinitive or GerundAdjective & AdverbPunctuating ClausesVerb Tenses and SubordinatesOther quiz:
Grammar and Absence › ViewWhat would be an appropriate response to: “What were you doing there?”
A. I was having a picnic.
B. I was watching TV.
C. I was at home.
D. I don’t know.
Modal Verbs › View
Johan ____ run in the afternoons, he broke his foot this morning.
A. Can
B. Could
C. Can’t
D. Couldn’t
