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_____ river is very polluted. Do you think we can clean up _____ river?
A. The / a
B. A / the
C. The / the
D. A / a
Select your answer:

Random Topics:
Present Perfect: for/sincePreposition of PlaceConditionals and WishesModals, Infinitives and GerundsTenses and Verb FormsTenses and QuestionsAdjective vs AdverbGive, do and makeProgressive Verb TensesRelative PronounsOther quiz:
Grammar › ViewTat usually __________ tv late at night.
A. Watch
B. Watches
C. Sees
D. Looks
Grammar › View
Maybe we can ask ______ policeman for directions.
A. those
B. these
C. that
