问题
选择题
| The conference aims to develop business and let people think about ______ they can have a positive influence on the planet. |
A. why B. that C. what D. how |
答案
答案：D
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| The conference aims to develop business and let people think about ______ they can have a positive influence on the planet. |
A. why B. that C. what D. how |
答案：D
