问题
选择题
—Is _____ book on the desk _____ useful one? —No, it isn't. |
A. the…an B. the …a C. a…the D. the …× |
答案
答案：B
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—Is _____ book on the desk _____ useful one? —No, it isn't. |
A. the…an B. the …a C. a…the D. the …× |
答案：B