问题
选择题
| I really don't know if she _______ happy when she ______. |
A. is, arrives B. is, will arrive C. will be, will arrive D. will be, arrives |
答案
答案：D
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| I really don't know if she _______ happy when she ______. |
A. is, arrives B. is, will arrive C. will be, will arrive D. will be, arrives |
答案：D