[ Grammar ]
Who ____ you ____ 30 minutes ago?
A. are – waiting
B. do – wait
C. did – wait
D. did – waited

Random Topics:
Past Simple & Past ContinuousDefinite vs Zero Article Abstract NounsRelative ClausesPossessive Pronouns and Adjective PronounsThere is or There arePresent Perfect: for/sinceQuestion TagTenses: Present simple, Past Simple, Future SimplePast Simple (to be)Subject Verb Agreement and Coordinating ConjunctionsOther quiz:
Modals › ViewYou _____________ leave the door open – the dog will get out.
A. mustn’t
B. should
C. don’t have to
D. need to
Subject-Verb Agreement › View
Which one is NOT a sentence fragment?
A. Although it was a more difficult test than the students had ever taken.
B. We decided to study before we went out to the party.
C. Her ability to remember details, after all, not what is used to be.
A pilot _____ wear a uniform when he’s at work.
A. has to
B. must
Grammar › View
If I ______ you were coming, I ________ you at the station.
A. knew, would meet
B. had known, would had met
C. have known, would meet
D. had known, would have met
