No. from watching TV vision deteriorates and not only.;
No. in order to play musical instruments well you need to study for a long time.;
3 - я так понимаю нужно написать, много ли ты смотришь телевизор, хорошо ли ты играешь на музыкальных инструментах.
Нет,"the" в этом предложении не нужен.
2 She has won alot of competions
3 We have watched two films today
4 What times have you gone there
5 I have sent 100 texts this week
6 How many peple has he invited to the circus