[ -Ing and Infinitive Verb Patterns ]
I usually forget _____ the lights off.
A. turning
B. to turn

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Passive SentencesWho vs WhomVerbs - third personPresent Perfect or Past SimplePreposition and ConjunctionCommon & Proper NounsFunctional Sentence TypesModal Verb, Passive VoiceFirst Conditional, Future Time ClausesConditional TensesOther quiz:
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a. at
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The birds are flying in the air.
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