求以下5句中文的英文翻译

Question

1. 客人到达时，外交部长在门口迎接他们。(as introducing a clause for an actio
2. 我到达邮电局时，才发现自己把信留在家里了。(as introducing a clause for an action happening at the same time)
3. 走在街上时，他碰到了以前的老师，老师如今退休了(retire)。(while +-ing introducing another action happening at the same time)
4. 两周前我写信问那所网上学校如何买到课本，他们的回答咄咄逼人，让我很生气。(make one's blood boil)
5. 想到他们期终考试舞弊（cheat）我就生气。(make one's blood boil)

Answer 1

1. The Foreign Affair Minister was welcoming them when the guests arrived.
2. I realized that I left the letter at home when I got to the post office.
3. He met his former teacher, who has been retired, while he was walking on the street.
4. I have written to that Internet School for textbooks two weeks agol. But their aggresive answer made my blood boil.
5. The thinking of their plagerizing in the exams makes my blood boil.