Помогите исправит ошибки:

He has translating the book for three days.

Mr. Wilson couldn't to phone back  at six o'clock.

If I'll  speak to him tomorrow, I'll ask him about his plans.

If I was rich, I would help the poor animals.

If he has done his homework yesterday , he wouldn't  have got a bad mark.

He has been translating the book for three days.Mr. Wilson couldn't phone back at six o'clock.If I speak to him tomorrow, I'll ask him about his plans.If I were rich, I would help (the) poor animals.If he had done his homework yesterday, he wouldn't have got a bad mark.