单项选择题
The population of the earth（）increasing fast. One third of the population here（）workers.
A.is;are B.is;hasbeen C.are;is D.is;was
单项选择题 He, as well as I,（）a student.
单项选择题 She comes from（）people's Republic of China.
单项选择题 Given the high price,（） it's not surprising they didn't buy it.
