题目内容
There ______ a number of books on the bookshelf. And the number of the books ____ 50.
A. are; are B. are; is C. is; is D. is; are
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题目内容
There ______ a number of books on the bookshelf. And the number of the books ____ 50.
A. are; are B. are; is C. is; is D. is; are