a 204-72÷12     b15×2^3+4×3^2-5×7      c 3^5÷3^2+2^3×2^2        d 6^3×57+43×6^3          e 21×7+21×2-11×(3^5÷3^3)              g 327-27 [(3^3+2020^0)÷7-2]

giải giúp mình vs

Exercise 2: Give the correct form of the verb.

1. Toshico had her car (repair) .............. by a mechanic.

2. Ellen got Marvin (type) ..................her paper.

3. We got our house (paint) .................. last week.

4. Dr Byrd is having the students (write ) ...................   a composition.

5. Mark got his transcripts (send)................... to the university.

6. Maria is having her hair (cut) ......................... tomorrow.

7. Will Mr. Brown have the porter (carry)...........................his luggage to his car?

Exercise 1: Put these sentences into the passive form.

            1. Mary types letters in the office.

            .........................................................................................................................................

            2. His father will help you tomorrow.

            .........................................................................................................................................

            3. Science and technology have completely changed human life.

            .........................................................................................................................................

            4. Peter broke this bottle.

            .........................................................................................................................................

            5. They are learning English in the room.

            .........................................................................................................................................

            6. Nothing can change my mind

            .........................................................................................................................................

            7. No one had told me about it.

            .........................................................................................................................................

            8. I don’t know her telephone number.

            .........................................................................................................................................

            9. My students will bring the children home.

            .........................................................................................................................................

            10. They sent me a present last week.

            .........................................................................................................................................

11. John gets his sister to clean his shirt.

            …………………………………………………………………………………………..

            12. Anne had had a friend type her composition.

…………………………………………………………………………………………..

13. Rick will have a barber cut his hair.

…………………………………………………………………………………………..

14. They had the police arrest the shoplifter.

…………………………………………………………………………………………..

15. Are you going to have the shoemaker repair your shoes?

…………………………………………………………………………………………..

16. I must have the dentist check my teeth.

…………………………………………………………………………………………..

17. She will have Peter wash her car tomorrow.

…………………………………………………………………………………………..

18. They have her tell the story again.

…………………………………………………………………………………………..

dựa vào vốn hiểu biết hãy cho biết các dân tộc ít người phân bố chủ yêu ở đâu