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 ) as money by a lot of north americans since 1999, the euro ) in most eur. countries every year, a lot of old coins __ (buy and sell) on the internet

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