[ Grammar and Vocabulary ]
. I _______ my keys yesterday.
A. lost
B. was losing
C. lose
D. losing
Select your answer:
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QuantifiersPrepositions of Time, Place, and MovementLanguage Features of an Opinion ArticleTOEFLGrammar Present Perfect (ever never)Prepositions after Verbs and AdjectiveWill vs Verb InfinitivesSentencesFood VocabularyIdiomsOther quiz:
Tenses › ViewThey ___ TV when we arrived.
A. were watching
B. watched
C. had watched
D. watch
Word Form & Verb Tense › View
People can develop health problems and become ill if they breathe _____ air
A. pollution
B. to pollute
C. polluting
D. polluted