问题
选择题
| When my hand touched the letter in my pocket,I realized that I had forgotten _____ it. |
| A. to post B. to have posted C. posting D. having posted |
答案
答案：A
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| When my hand touched the letter in my pocket,I realized that I had forgotten _____ it. |
| A. to post B. to have posted C. posting D. having posted |
答案：A