[ Adverb Clauses of Time ]
Mary cleaned the kitchen. At the same time, Ron cleaned the bathroom.
Mary cleaned the kitchen _____ Ron cleaned the bathroom.
A. before
B. after
C. when
D. while
E. until

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-ing / InfinitiveHelping and Linking VerbsSentence Types and ConjunctionsConjunctions, Prepositions and InterjectionsTense,noun,preposition,quantityFirst ConditionalsAuxiliaries VerbPast simple regular verbsSimple Past Irregular & NegativeSimple Present and Present ContinuosOther quiz:
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A. a
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Don’t worry about your driving test. You___________________ pass.
A. must
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A. been
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Students __________ arrive on time to class.
A. don’t have to
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C. has to
D. doesn’t have to
