[ Tenses ]
What ____________ when Peter came in?
A. did you do
B. were you do
C. were you doing

Random Topics:
Verb + PrepositionFunctional Sentence TypesGrammar and VocabulariesGerund NounAdverbs by TypePerfect ModalsModal Auxiliaries and To Be VerbsFuture Time and TensesSimple Present and Present Continuous TensesUnscramble SentenceOther quiz:
Grammar › ViewA huge …………. wall around the politician’s house keeps unwelcome visitors away.
A. stone
B. stony
Vocabulary and Grammar › View
Which of the following is an adverb of certainty?
A. definitely
B. slowly
C. sometimes
D. here