[ Grammar ]
We ……… in the classroom, when the headmaster entered.
A. have all been sitting
B. don’t sit
C. were all sitting
D. are all sitting

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Adjectives and PrepositionsPresent or Past TensesVerb Tenses (Progressive, Perfect)Comparative and SuperlativesGrammar and PunctuationAdjectives & PrepositionTenses and PronounsPast Simple Negative & QuestionsVerb PatternsAdjectives and VocabularyOther quiz:
Prepositions › ViewI shall be back ……about twenty minutes times.
A. In
B. At
C. By
D. From
Vocabulary › View
To …………………………. is to present, promote.
A. portray
B. interpret
C. incorporate
D. feature