[ 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:
Modal Verbs › ViewI’m sure this is the right answer.
This __________ be the right answer.
A. must
B. might
C. can’t
D. could
Grammar › View
Choose correct non-defining noun phrases:
_____________________________ , won the Nobel Peace Prize in 2009.
A. Barack Obama, the former president of the USA,
B. the former president of the USA, Barack Obama
Modals › ViewA 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
