How and why Jack came to China _____ not known. When and where to build the new library _____ not been decided.
A.is; has
B.are; has
C.is; have
D.are; have
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Now Tom together with his classmates _____ football on the playground.
A. are playing
B. plays
C. is playing
D. play
Two hundred and fifty pounds _____ too unreasonable a price for a second-hand car.
A.is
B.are
C.were
D.be
All but Dick _____ in Class Three this term.
A.are
B.is
C.were
D.was
Soon after the earthquake, every man, woman and child _____ about it.
A.were talking
B.was talking
C.talk
D.talks