Помогите Вставьте предлоги for ,during, since, ago ,begorе :
1. She has been waiting for us........ an hour!
2. The tourists visited the Red Square.....their stay in Moscow.
3. My CD player is working it was repaired 2 hours .....
4. Sarah received her friend's letter that had been sent 2 weeks.....
5. I haven't seen her......her marriage.