1- our friends have already been to different countries.
2. They have gone to Wales today
3. They have already done a lot of exciting things there.
4. But they haven't seen the strange animal yet.
1. dirty
2. old
3. clumsy
4. наверное, имела в виду "quiet" - loud
5. dangerous
1)rains;will go. 2)go;faster than by foot.
3)by car,it's faster than by bus. 4)are ready.