Sure! Here are the completed sentences using the correct form of "do" or "make":

### III. Complete the following sentences with the correct form of Do or MAKE:

1. He is **doing** research in chemistry now.
2. She **made** my bed this morning.
3. Have you **made** arrangements to sell your house?
4. We have to **do** military service in my country.
5. Tom’s mother **made** him eat his dinner last evening.
6. We always **do** our best.
7. That shop **does** very good business.
8. She always **makes** fun of me.
9. The principal will **make** a speech at the meeting.
10. Let’s **make** a plan.
11. Who **made** this beautiful blouse?
12. A computer can **do** simple calculations with lightning speed.
13. I’m going to **do** some reading.

### IV. Choose DO _ HAVE _ MAKE to fill in the gap to complete sentences:

1. I hope to **make** my own business one day.
2. I don't **have** many hobbies.
3. My wife usually **makes** the bed, rather than me.
4. Many countries **have** problems with obesity.
5. I **made** a mistake in my IELTS reading last time I took the test.
6. I **have** my break at work at 3.15.
7. Reading a lot **makes** a real difference to your IELTS score.
8. I’m planning to **take** a holiday in June or July.
9. I **do** my shopping at the weekends.
10. I don’t **have** much sympathy with students who fail because they did not study.
11. If someone is **making** a lot of noise I can’t concentrate.
12. I don’t always **have** time to study.
13. I’ll **do** my best in the IELTS test.
14. I usually **do** the cooking and ironing in our house.
15. You can **make** a lot of money if you are a doctor.
16. **Taking** a rest now and again is important if you are studying hard.
17. You must only **do** business with people you can trust.
18. I **had** a good time on holiday in France.
19. If I **do** nothing I get really bored.
20. Giving money to charity **makes** a real difference to my life.

Let me know if you need further assistance!