[ Past Simple, Past Continuous, Past Perfect ]
They all ______ talking when the professor came into the hall.
A. stopped
B. had stopped

Random Topics:
Future PassiveIntensifiers: Really vs VeryPast Tense vs Future TenseAsking & Giving OpinionTime Clauses of FutureModal AuxiliaryPronounsGrammar for IELTSAuxiliary Verbs (be, do, have)Gerund NounOther quiz:
Grammar › ViewWhen playing or swimming in the pool, children ____ be accompanied by their parents.
A. should
B. must
C. don’t have to
D. have to
Grammar and Vocabulary › View
Zhi Li’s friends __________ the bus to school every morning.
A. take
B. took
C. takes
D. taking
Grammar › ViewWe …………………. our homework every day.
A. mustn’t do
B. must do
C. mustn’t
Modals › View
Emma, Daniel, and Benjamin are excited! Their friend Rashhed ____ dance professionally at the school talent show next month.
A. could
B. can
C. will be able to
