Question

Преобразуйте в Indirect questions.
1. Is the post office open?
Do you know ________?
2. What time does the match start?
Do you know  ________?
3. Why has Leo gone home?
Do you know  ________?
4. Where did i put my mobile phone?
Do you know  ________?

и здесь просто раскройте Pr.Simple, Past Simple, Present Perfect
Years ago shells __(use) as money by a lot of north americans
Since 1999, the euro __(introduce) in most eur. countries
Every year, a lot of old coins __ (buy and sell) on the internet

Answer 1

1. Do you know if the post office is open
2. Do you know what time the match starts
3. Do you know why Leo has gone home
4. Do you know where I put my mobile phone

Years ago shells were used as money by a lot of north americans
Since 1999, the euro has been introduced in most eur. countries
Every year, a lot of old coins are bought and sold on the internet