题目内容
The population, one third of which___ farmer workers, __increasing very fast.
| A.is; are | B.is; is | C.are; is | D.are; are |
C
解析
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题目内容
The population, one third of which___ farmer workers, __increasing very fast.
| A.is; are | B.is; is | C.are; is | D.are; are |
C
解析