Answer:
1. I'm meeting him at midday.
2. Our family has a well-established business. It was started by my grandfather in 1935.
3. If you want them to interview you for the job, send them your CV.
4. The company received over 100 CVs from interested applicants.
5. My brother is more sociable than me. He gets on with everyone he meets.
6. Fluency is perhaps the most important language skill.
7. Our school choir won the competition.
8. What caused you to change your mind?
9. You can launch the program by double-clicking on the icon.
10. She died at the age of 60 after a long illness.
11. Can’t use my phone because the signal isn’t strong enough here.
12. There are some sports where it is good to gain weight, rather than lose it.
13. Cancer is a serious disease in which cells in someone's body grow in a way that is not normal.
14. These trees grow well in a sandy soil.
15. These bacteria are invisible unless viewed with a microscope.
16. We want to buy some medicine from the chemist.
17. We learnt how to measure energy in our physics lesson today.
18. He received a threatening letter from an unknown person.
19. She failed to comprehend the seriousness of the situation.