请你修改一下作文。文中共有10处语言错误，每句中最多有两处。每处错误仅涉及一个单词的增加、删除或修改。

增加：在缺词处加一个漏字符号（∧），并在其下面写出该加的词。

删除：把多余的词用斜线（\）划掉。

修改：在错的词下划一横线，并在该词下面写出修改后的词。

注意：

1. 每处错误及其修改均仅限一词；2. 只允许修改10处，多者（从第11处起）不计分。

Last November a English forum was held in Busan International High School of South Korea. Students from eight country took part in the forum representing their schools. I was one of the students in our school who was lucky enough to attend it. At the opening ceremony of the forum, students from Busan International High School play a lot of Korean traditional instruments, some of them were really new to us. The forum was very succeed. Every team did a good job and they highly thought of. During our stay in Korea, what impressed on us most was that Koreans love eating kimchi very much. Besides, in my opinion, it isn’t as deliciously as I had imagined.

耳穴埋籽的留籽时间（）

A.5～10天

B.10天以上

C.每天更换

D.2～7天