<span>1. Moscow is one of the beautiful cities in the world. 2. Nick has a black dog. 3. I am a student. 4. They are my friends.
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1) I visit social networking sites every day.
2)for few minutes.
3)Yes, I think so, because many teenagers don't like school and learning and they wants to spend time on phone and forget about problems.
1.have done 2.haven't seen 3. have been 4. have translated 5. have passed
1. had won
2 were you doing
3. were you carrying, was carrying , had come
1. We arrived at the cinema at 6.15 p.m., but the film started at 6.00 p.m.
When we arrived at the cinema, but the film had started.
2. I didn't see my sister last night. She was in bed when I arrived home.
I arrived after she had gone to bed.