Answer:"Teens need adequate deep sleep and REM sleep to rebuild long-term memory for learning, focus attention for driving and maintain health and fight obesity ... They're so connected to their machin
Explanation:
long-term memory for learning, focus attention for driving and maintain health and fight ob
1. Have just read
2. Will have passed
3 had just put
4. Have saved
5. Has she gone
6. Had not slept
7.has to pack
8.will you have loved
9. Has to eat
10. Had to make
11. Will have finished
12. Had forgotten
13. Have not met
20. Has cleaned
