population of the earth____increasing fast.One third of the population here_______workers.A:is,are B:is,has been C:are,is D:is,was

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population of the earth____increasing fast.One third of the population here_______workers.A:is,are B:is,has been C:are,is D:is,was

population of the earth____increasing fast.One third of the population here_______workers.A:is,are B:is,has been C:are,is D:is,was
population of the earth____increasing fast.One third of the population here_______workers.
A:is,are B:is,has been C:are,is D:is,was

population of the earth____increasing fast.One third of the population here_______workers.A:is,are B:is,has been C:are,is D:is,was
a,第一个population表示人口数量,是一个整体,第二个population表示的是人,所以用复数