Перепишите каждое из следующих предложений дважды: в и в будущем времени. заменяйте модальные глаголы must и can эквивалентами, где необходимо 1. he can't join the party because he is busy. 2. i can settle my own problems.

He couldn't join the party because he was busy.
He won't be able to join the party because he will be busy.

I could settle my own problems.
I will be able to settle my own problems.