[ Adverb Clauses ]
After __________ every door, I went to upstairs to my bedroom.
A. I lock
B. locked
C. locking
D. lock

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Modals TensesSynonym and AntonymVerb Forms and PrepositionsInfinitives or GerundsConjunctionsHave to/Has toElectricity VocabularyPast Simple VerbsPrepositions and Prepositional PhrasesApostrophes and GrammarOther quiz:
Tenses › ViewThird-person singular present form of verb “to be”:
A. is
B. was
C. being
Present tense Affirmative › View
Oliver always ___________ fun
A. have
B. has