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Exercise 5: Read the article in Exercise 4 again and match the highlighted words in the article to their meanings.
1. protect
Chọn...
2. comments | Chọn..
3. collection
4. essential
a. things that you say or write that express your opinion.
b. a group of things or people
c. very important and necessary
d. keep someone or something safe from something dangerous or bad.
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