The great writer and professor _____, who ____ very strict with his students.
A. is an old man; is
B. are both old men; are
C. is an old man and a young man; is
D. are two Chinest; are
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A large number of students in our school ______ from the countryside; the number _____ growing these years.
A. is; has been
B. are; has been
C. is; have been
D. are; have been
He no less than I _____ eager to go the Great Wall.
A. am
B. is
C. are
D. were
Air pollution, together with littering, ____ many problems in our industrial cities today.
A. causes
B. cause
C. caused
D. causing
The Arabian Nights ______ well know all over the world, in which many a story ________ interesting and instructive .
A. is; are
B. are; is
C. are; are
D. is; is