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Mexico City and London are both _____ big cities.
A. the
B. a
C. an
D. zero article

Random Topics:
Pronouns and AdverbsV-ing/to-VGerund or to InfinitiveReported SpeechRun-On SentencesActive vs. Passive VoiceSo / Neither / Either / TooPresent Continuous TenseGerundModals and AdviceOther quiz:
Modal Perfect › ViewMy car stopped on the high way. It _____ out of gas
A. may run
B. may have run
C. must be
D. should have run
Grammar › View
… speed limit is 70 miles per hour on the motorway.
A. This
B. The
C. A
Grammar › View___________________ tennis after school?
A. Margaret and Paul play
B. Do Margaret and Paul play
C. Are Margaret and Paul play
Grammar › View
Can you swim?
A. No, I can.
B. No, I can’t.
