[ Grammar ]
There should be ______ pollution in big cities.
A. There should be too much pollution in big cities.
B. There should be too many pollution in big cities.
C. There should be fewer pollution in big cities.
D. There should be less pollution in big cities.

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Past Tenses › ViewShe … reading a book when the phone rang
A. had
B. was
C. were
Grammar › View
They drank tea after they ………………………………. dinner.
A. had finish
B. had finished
C. has finished
D. have finished
