составьте предложения , расположив слова в нужном порядке :
1. sure/ you/ am/ enough/ to/ I/ seriousness/ are/ old/ the/ problem/ understand/ that/ of/ the.
2. watch/ not/ a/ nothing/ TV/ there/ video/ why/ if/ on/ is/ interesting/ film?
3. managed/ last/ her/ what/ out/ happened/ I/ at/ to/ find/ had/ really/ to.​

1)I am sure that you are old enough to understand the seriousness of the problem 

2)If there is nothing interesting on TV ,why not watch a video-film

3)At last I managed to find out what really had happened to her