We have donated books and clothes for ten years. → We started donating books and clothes ten years ago.
Structure: Present Perfect Tense (have + past participle) → Past Simple Tense (started + gerund)
Change: We are moving the sentence to the beginning point of the donation action, ten years ago.
Mary was sick, so she couldn’t go to school. → Mary couldn't go to school because she was sick.
Structure: Cause and Effect Clause (so) → Subordinating Clause (because)
Change: Both sentences express the same cause-and-effect relationship, but the second sentence uses a more formal structure with the subordinating conjunction "because."
My hobby is raising money for the poor. (enjoy) → I enjoy raising money for the poor.
Structure: Sentence about a hobby (is) → Sentence about preference (enjoy + gerund)
Change: We are rephrasing the sentence to focus on your enjoyment of the activity.
This is the first time I’ve met her. ______________________________   → I have never met her before.
Structure: Sentence about the first time (This is the first time) → Negative past perfect (have never + past participle)
Change: Both sentences express the same idea, but the second sentence uses a more concise negative past perfect tense.
She is keen on reading English books. (like) __________________________________________  → She likes reading English books.
Structure: Sentence about being interested (keen on) → Sentence about preference (like + gerund)
Change: We are simplifying the sentence using a more common way to express liking something.
My brother likes swimming and sunbathing( interested) _______________________________________________ → My brother is interested in swimming and sunbathing.
Structure: Sentence about liking (likes) → Sentence about being interested (interested in)
Change: We are using a more formal way to express your brother's interest in these activities.
**  I find collecting glass bottles interesting. (hobby) ________________________________________________  → Collecting glass bottles is my hobby.**
Structure: Sentence about finding something interesting → Sentence about a hobby (is)
Change: We are rephrasing the sentence to focus on collecting glass bottles as your hobby.
I often making models in my free time. (HOBBY) →  My hobby is making models in my free time.
Structure: Present continuous tense (incorrect - missing verb conjugation) → Sentence about a hobby (is)
Change: We are correcting the verb tense and rephrasing the sentence to focus on making models as your hobby.
**Linh likes collecting stamps of different countries in the world.      → Linh enjoys collecting stamps of different countries in the world. (enjoy).  **
Structure: Sentence about liking (likes) → Sentence about preference (enjoys)
Change: We are using a synonym "enjoys" to express Linh's strong liking for collecting stamps.
My brother and I are really interested in watching horror films.      → My brother and I are really fond of watching horror films. (fond)
Structure: Sentence about being interested (interested in) → Sentence about preference (fond of)
Change: We are using a synonym "fond of" to express a stronger liking for watching horror films.