[ Grammar ]
There are strict rules against students ____ their mobile phones at the school premises.
A. are using
B. using
C. want to use
D. having used

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Modal AuxiliariesHow much and how manyAdverb of Frequency and TensesHabitual and Continuous TensesVocabulary, Adjective & PrepositionAdverbial Concession ClausesGrammar & VocabConditional Sentences and Verb FormPast Perfect Simple & Past Perfect ContinuousGerunds + To InfinitiveOther quiz:
Modal Verb Gerund or To Infinitive › ViewDo you like ………….. early?
A. get up
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My parents gave me a present.
A. Active Voice
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Vocabulary › View
What is the inner layer of the Sun’s atompshere, located above the photosphere and below the corona?
A. Corona
B. Photosphere
C. Chromosphere
D. Blazar