I.

1. C busy

2. A chemistry

3. B called

4. D lose

5. A camera

II.

1. I often play soccer on Saturday afternoon.

2. The little boy is not strong enough to lift this box.

3/4. Lan has collected stamps since 2015 but her friends haven't.

5. Mai loves listening to music in her free time.

6. Why was Ba late? - Because he got up late.

7. My sister usually looks at herself in the mirror.

8. You should do your homework carefully.

9. Hoa's room is larger than mine.

10. My father was good at swimming. He used to go swimming in the river.

III.

1. Minh likes playing tennis after school.

2. My father has worked in that factory for two years.

3. We doing a test now.

4. They will go to the zoo tomorrow.

5. Ba walks to school every day.

IV.

1. They have known each other for several years.

2. No, he didn't.

3. Brown is a writer.

4. Yes, she is.

V.

1. My father used to smoke a lot two years ago.

2. Hoa bought a new hat last week.

3. Tuan likes cooking meals but he hates washing up.

4. The kitchen is dangerous place for children to play.

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