Составить 10 предложений с неправильными глаголами: be, beat, become, begin, break, bring, broadcast, build, buy, can в present perfect ! заранее

1. He has just was here. 
2. They have beaten my friend. 
3. I haven't become the president yet.
4. She has already done her homework
5. I think, I've just broke her heart. 
6. He has not brought my money yet.
7. They have broadcasted this show for many years.
8. This building have built since 2015.
9. I have not bought present for my mother yet.
10. He has been able to swim since childhood