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1) A postman delivers my letters every Friday.
2) Somebody is serving coffee now.
3) Someone has stolen my bike.
4) They offered me a pay increase.
5) Someone was following us all the way back home.
6) They are going to renovate our office at the weekend.
7) A good translator will translate my book into Spanish.
8) They had eaten all the food before we arrived at the party.
9) You should clean your room at least once a week.