Tóm tắt nội dung:
Bài nói về tầm quan trọng của việc giữ răng miệng khỏe mạnh, nguyên nhân khiến răng bị sâu, và cách chăm sóc răng đúng cách — như đánh răng hằng ngày, ăn uống hợp lý, tránh đồ ngọt, và đi khám nha sĩ thường xuyên.

1. Good teeth help us to ______.
A. have good eyesight
B. have good weight
C. chew
D. be important

→ Trong bài: “Good teeth help us chew our food.”
Đáp án: C. chew

2. When food and germs collect in a little hole in the tooth, it can make us feel quite ill.
→ Câu này giải thích nguyên nhân sâu răng.
What does this cause?
A. toothache
B. tooth decay
C. headache
D. bad smell

Đáp án: B. tooth decay
(vì bài viết: “The decay begins in a little crack…”)

3. A lot of people visit the dentist only when ______.
A. they have holes in their teeth
B. they have brush their teeth
C. they eat too much
D. they feel well

→ “We often visit the dentist twice a year. He can fill small holes in our teeth before they decay too fast.”
Nhiều người chỉ đi khám khi răng đã sâu.
Đáp án: A. they have holes in their teeth

4. We should brush our teeth ______.
A. after breakfast
B. before breakfast
C. before bedtime
D. Both B & C

→ Trong bài: “We should brush our teeth with a toothbrush and toothpaste to clean them twice a day: before breakfast and before going to bed.”
Đáp án: D. Both B & C

5. We shouldn’t eat too much ______.
A. rice and fish
B. fresh fruit
C. bread and potatoes
D. chocolate

→ “We should avoid food that is harmful to our teeth, especially sweets such as chocolate, biscuits, and soft drinks.”
Đáp án: D. chocolate