Because the new classmates were quite different from the old ones, and the writer couldn't find common interests with the new classmates.
题意:
为什么作者一开始没有交到新朋友?
根据第一段,第三至五行Also,my new classmates were quite different from my old ones. I thought they weren't as fun as my old classmates. They also weren't in the school activities I was in. I couldn't find common interests with them.而且,我的新同学和我的老同学很不一样。 我觉得他们没有我的老同学有趣。 他们也不参加我参加的学校活动。 我和他们找不到共同的兴趣。
可知,作者一开始没有交到新朋友的原因是新同学与老同学有很大的不同,作者找不到与新同学的共同兴趣。
故答案为:Because the new classmates were quite different from the old ones, and the writer couldn't find common interests with the new classmates.