[ Tenses ]
They ___ before the teacher came.
A. leave
B. left
C. had left
D. were leaving

Random Topics:
AdverbsPhrasal Verb and ModalPreposition on TimeObject PronounPassive Modals, Impersonal PassiveIntermediate GrammarConditional Sentences and Verb FormBasic TensesVerbs and PrepositionsCommon ErrorOther quiz:
Grammar › ViewHe is very lonely. He doesn’t have _________ friends.
A. any
B. few
C. much
D. some
Embedded Questions › View
“How long should I wait?”
- Please tell me how long should I wait.
- Please tell me how long I should wait.