Можете объяснить present simple правило и там как его определять в предложениях)

Present Simple
настоящее простое. Обозначает постоянное действие(либо постоянно повторяющиеся) например :Я учусь в школе, действие постоянно, не только сегодня происходит. В предложениях могут употребляться такие слова как always, often. Образуется в утвердительном предложении не изменяя формы глагола(кроме he, she, it) тогда к глаголу добавляется "s" she lives
в отрицательной и вопросительной форме вс глагол do( с he, she, it-does)

1. I C. must remember to go to the bank. I haven’t got any money.

2. __ C. May ___ I take your order, please?

3. _ A. Can you ride a bicycle?

4. Steven___ B. could read and write until he was seven years old.

5. _ B. Will you make dinner tonight?

6. Susan, __ A. Will you come outside and play with me?

7. You _ C. shouldn’t go to bed late during the week.

8. You ___ A. ought to visit your grandparents more often.

9. __ C. Shall we go to the cinema at the weekend?

10. “Where __ B. shall we meet?” “At my place”

11. Peter _ A. ought to go to the dentist before the toothache gets worse.

12. You ___ A. needn’t do the ironing. I’ll do it instead.

13. You ___ B. mustn’t ___ cross the road without looking first. It’s dangerous.

Кажется так:
Exercise 1.
Open the brackets using Present Simple or Present Continuous.
I'm not drinking coffee now. I'm writing an English exercise.
I don't drink coffee in the evening. I drink coffee in the morning.
Your friend is doing his homework now?
Your friend is going to school in the morning?
Look! The baby is sleeping. The baby always sleeps after dinner.
My grandmother don't work. She is on pension.
Where is your cousin work? - He works at a hospital.

Exercise 2.
Choose the correct answer.
Story about a person's life written by someone else
d) biography
Facts and statistics about people, places and things
b) encyclopedia
Long story, usually in chapters
b) novel
Has rhythm, may rhyme, may have stanzas (sections)
a) poetry

Exercise 3.
Open the brackets using the first verb with used to, and the second one in Past Simple.
e.g.: He (live) in New York before he (enter) Oxford University. – He used to live in New York before he entered Oxford University.
I used to earn enough money, but then I lost my job.
Bob not used to like football, but then he changed his mind.
My mum used to drive a lot before she had that accident.
This telephone used to work well before my son dropped it.
Mary used to work in a hotel, but then she got married.
He used to play basketball before he broke his leg.

Exercise 4.
Choose the correct answer.
He was cooking his wife came into the room.
c) when

She stayed at school the lessons were over.
b) until

He was reading the book his children were doing homework.
c) while
Call me you remember some new information.
a) as soon as