[ Grammar ]
He had promised to be back ______five o’ clock.
A. by
B. on
C. since
D. at

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Prepositional PhrasesGrammar and VocabulariesThird ConditionalRelative Clauses & Real ConditionalsModals and PhrasesWill or Going toOrder of AdjectivesVerb 3 formsAuxiliaries VerbActive and PassiveOther quiz:
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Conditional Sentences and Verb Form › View
I would have visited you before if there _____ quite a lot of people in your house.
A. hadn’t
B. hadn’t been
C. wouldn’t be
D. wasn’t