[ 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

Random Topics:
Adjectives and PrepositionsPresent or Past TensesVerb Tenses (Progressive, Perfect)Comparative and SuperlativesGrammar and PunctuationAdjectives & PrepositionTenses and PronounsPast Simple Negative & QuestionsVerb PatternsAdjectives and VocabularyOther quiz:
Tenses › ViewThey ___________________ in Chicago for 20 years (be).
A. has been
B. are
C. have been
D. will being
Conditionals › View
If the leaves ………. (fall), the trees ………. (be) bare.
A. fall/is
B. fall/was
C. fell/is
D. fall/ are
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
