[ Grammar ]
Please be quiet. I ____ (try) to concentrate on my math homework.
A. am trying
B. are trying
C. try
D. tries

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Grammar: was/wereNarrative, Past TensesAdjective & AdverbConditional SentenceAdverb of TimeQuantifiers and ArticlesModals TensesFragment, Comma Splice and Run -on SentenceVerb PhraseNouns FormationOther quiz:
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A. it
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I cannot go to school __________ I have fever.
A. and
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What is the correct form of the verb ‘to go’ in past tense?
A. Gone
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