共同组成的一个“家族相似”的语言族群来源于一个个“美”的词汇。()
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About 60 percent of the students ________ from the south, the rest of them ________ from the north and foreign countries.
A. are ;is
B. are; are
C. is; are
D. is; is
Half of the workers here ________ under 30 ________.
A. is; years
B. are; year old
C. is; years old
D. are; years of age
Now Tom with his classmates ________ football on the playground.
A. play
B. are playing
C. plays
D. is playing
The number of pages in this dictionary ________ about two thousand.
A. are
B. has
C. have
D. is