EXERCISE 20. Fill in the gaps with the missing words in the follow-ing sentences, the first letter of each word has been given to help you 1) T ... their life people are learning different kinds of skills. 2) They g ... knowledge about the world. 3) We'll discuss the education using one useful s ... 4) Children learn to r .. a bicycle. 5) On their own i ..., people may visit a museum. 6) The students have to p ... exams. 7) They are in c ... of education. 8) The students are working at about the same S ... 9) Learners may e ... a degree. 10) His certificate is a m ... of his suc- cess over the years.​

2. got,3 site, 4ride, 6 pass, 7 case, 8 subject, 9 enter,

1) Throughout their life people are learning different kinds of skills.
Explanation: In this sentence, the missing word is "Throughout." This word is used to indicate that learning is continuous and ongoing throughout a person's life.

2) They gain knowledge about the world.
Explanation: In this sentence, the missing word is "gain." This word means to acquire or obtain something, in this case, knowledge.

3) We'll discuss the education using one useful s...
Explanation: In this sentence, the missing word is "source." This word is used to refer to a particular method or resource used for education.

4) Children learn to r... a bicycle.
Explanation: In this sentence, the missing word is "ride." This word is used to indicate the action of using a bicycle.

5) On their own i..., people may visit a museum.
Explanation: In this sentence, the missing word is "occasionally." This word means happening from time to time or infrequently.

6) The students have to p... exams.
Explanation: In this sentence, the missing word is "pass." This word means to successfully complete or achieve a particular score in an exam.

7) They are in c... of education.
Explanation: In this sentence, the missing word is "charge." This word means responsibility or control over something.

8) The students are working at about the same S...
Explanation: In this sentence, the missing word is "speed." This word is used to refer to the rate at which someone or something moves or operates.

9) Learners may e... a degree.
Explanation: In this sentence, the missing word is "earn." This word means to receive or achieve something, in this case, a degree.

10) His certificate is a m... of his suc- cess over the years.
Explanation: In this sentence, the missing word is "marker." This word is used to indicate a sign, indication, or symbol of something. In this case, the certificate is a symbol of the person's success over the years.