1.I, read the book
2.He, help his mum
Поспрягать по временам

1.I'm reading the book now - Present ContinuousI often read the book - Present SimpleI read the book yesterday. - Past Simple I've just read the book. - Present PerfectI'll read the book tomorrow. - Future SimpleI was reading the book from 7 to 9. - Present Continuous2.He is helping his mum now. -  Present ContinuousHe  helps his mum on Sundays. - Present SimpleHe  helped his mum last Sunday. - Past SimpleHe  has already helped his mum - Present PerfectHe will help his mum next Sunday -  Future Simple