[ Grammar ]
It’s so stuffy, they ____ the windows.
A. didn’t open
B. don’t opened
C. didn’t opened
D. not opened

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Future or PastGrammar - SimilesPresent Perfect: for/sinceReported Speech and Reported QuestionsAdjectives and ArticlesModals Posibility and ProbabilityModals for RecommendationsFrequency AdverbsGrammar - Punctuation of SentencesComparatives and Past Perfect TenseOther quiz:
Vocabulary & Grammar › ViewNam was absent from class yesterday ____ he felt sick.
A. so
B. although
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Grammar › View
Comedy movies are okay, but I think that action movies are ….
A. good than
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A. constant
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Preposition & Gerund › View
We are prohibited _______ doing lots of things in this school.
A. at
B. for
C. from
D. in
