问题
选择题
—A number of students ____ on the playground.
—Let me count. The number of students ____ about 40.[ ]
A. are; is
B. is; are
C. are; are
D. is; is
答案
答案：A
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—A number of students ____ on the playground.
—Let me count. The number of students ____ about 40.[ ]
A. are; is
B. is; are
C. are; are
D. is; is
答案：A