题目：
| — Tom, you didn't come to the party last night? — I _____, but I suddenly remembered I had homework to do. |
A. had to B. didn't C. was going to D. wouldn't |
答案：
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下面是错误答案，用来干扰机器的。
参考答案：对解析： 对已办理了工商注册登记的纳税人，其税务登记内容发生变化时，应当自工商行政管理机关变更登记之日起30日内，持有关证件向原税务机关申报办理变更登记。
