[ Tenses ]
I suddenly remembered that I ____ my keys before leaving the house.
A. forgot
B. had forgotten

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Conditional 0Noun QuantifiersPast Simple, Past Continuous, Past PerfectSimple Future - WillBe going to / WillSynonymsPhrasal verbs and Prepositional PhrasesLinking Verbs & Helping VerbsPast Tense (Regular and Irregular)Adverbial Concession ClausesOther quiz:
Pre-intermediate › ViewPsychologists know a lot _____ fears
A. of
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Past Tenses › View
What _____ you _____ when I called you yesterday?
A. was – doing
B. did – do
C. were – doing
D. are – doing