问题
选择题
| _____ different kinds of pianos, the factory is sure they can satisfy people's needs. |
A. To produce B. Being produced C. Produced D. Having produced |
答案
答案：D
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| _____ different kinds of pianos, the factory is sure they can satisfy people's needs. |
A. To produce B. Being produced C. Produced D. Having produced |
答案：D