[ 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:
Vocabulary and Grammar › ViewWhen I heard my grandpa was in the hospital, my heart was filled with ___________.
A. protest
B. prejudice
C. anxiety
D. inherent
Grammar › View
I met ………….boy. ………boy was very tall.
A. a, a
B. the, a
C. a, the
D. the, the
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
