[ Grammar ]
The taller mountains reach into the colder layers of the atmosphere.
A. Complex
B. Not Complex

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Grammar & TensesRegular and Irregular AdverbVerb, Object, PrepositionComparatives, Superlatives & EquativesGrammar: Simple Past and Past Continuouswould should couldVOCAB & GRAMMARSubject and Verbs AgreementPresent ContinousComparison DegreeOther quiz:
Grammar › ViewWhen we were on a voluntary tour, we______ to public places to collect rubbish every day.
A. were going
B. went
C. have gone
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Subject Verb Agreement › View
Neither the dogs nor the cat … very hungry
A. is
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A. as sweet as
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Vocabulary and Grammar › View
Try not to ___________ too stressed at work.
A. be
B. have
C. get