问题
选择题
| I think they ______ if they ______ free. |
A. will come; will be B. will come; are C. come; are D. come;will be |
答案
答案：B
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| I think they ______ if they ______ free. |
A. will come; will be B. will come; are C. come; are D. come;will be |
答案：B