精选优质文档-倾情为你奉上高中英语主谓一致和反意疑问句专项练习题及答案从A、B、C、D四个选项中,选出可以填入空白处的最佳选项。 1. One-third of the area _ covered with green trees. About seventy percent of the trees _ been planted.A. are; have B. is; has C. is; have D. are; has2. The number of teachers in our college _ greatly increased last term.A number of teachers in this school _ from the countryside.A. was; is B. was; are C. were; are D. were; is3. What _ the population of China? One-third of the population _
