3:

5- are going to write

6-will cause

7- am going to come

8- will go

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4:

I am goind to go to school right now

I will build my home in 2020

i will not work at school because it is not for me

I am going to do sports because today it is Monday

I will be a good father in my family

I can not do it now because i am going to meet with my friends

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The enviroment will be better in the future  than now

The TV will be less popular un the future

The politics will be anger and more useless in the future

The clothes and fashion will be more strange in the future

The sports will be not useless in the future

The medicine will be stronger,faster and smarter in the future