精选优质文档-倾情为你奉上主谓一致练习主谓一致练习1. 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. are2. Half of the workers here _ under 30 _.A. is/years B. are/year old C. is/years old D. are/years of age3. Now Tom with his classmates _ football on the playground.A. play B. are playing C. plays D. is playing4. The number of pages in this dictionary _ about two