问题
选择题
A number of students ________ playing on the playground, and the number of students
in our school ________ increasing. [ ]
A. are; are
B. is; are
C. are; is
答案
答案：C
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A number of students ________ playing on the playground, and the number of students
in our school ________ increasing. [ ]
A. are; are
B. is; are
C. are; is
答案：C