但是我不知道为什么，这里的中国人们说着英语，外国人们说着中文。
But I don't know why Chinese people say hello with each other in English, then foreigners speak in Chinese.
此外，其他科目，如生物，历史，地理和英语也是我喜欢的。但是，我不知道为什么我几乎不记得历史事件和地理现象。
Besides, other subjects, such as biology, history, geography and English are my favorites too, but I don't know why I could hardly remember the events on the history and geographical phenomenon.
我不知道为什么找不到时间练习英语，我对自己感到失望。
I don't know why I can't find time to practice my English. I feel so disappointed in myself.
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