1.I have been in the NO.5 Middle school for six years up to now.
2.I have been in the league for two years since I came to the No.5 Middle school.
3.This is the first time that I watched such a fantastic film.
4.Great changes have taken place in my hometown over the past decade.
5.The movie had started for half an hour before we arrived at the cinema.
6.The train had left when they arrived at the railway station.
7.We have planted more than three thousand trees by the end of last year.
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