Comma placement exercise for grammar practice.

Let’s go through each sentence one by one and figure out where commas should be added. Commas are used to separate items in a list (especially when there are 3 or more), after introductory words or phrases, and sometimes before “and” in lists — though that last one is optional depending on style. We’ll follow the common school rule: use commas between all items in a list of three or more, including before “and”.

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Sentence 1:
*I enjoy reading swimming and playing with my friend.*
→ This is a list of 3 activities: reading, swimming, playing.
→ Add comma after “reading”, and after “swimming” (before “and”).
✔ Corrected: *I enjoy reading, swimming, and playing with my friend.*

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Sentence 2:
*On Mondays we have English Maths and Art.*
→ “On Mondays” is an introductory phrase → needs comma after it.
→ Then we have a list: English, Maths, Art → need commas between them.
✔ Corrected: *On Mondays, we have English, Maths, and Art.*

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Sentence 3:
*Please buy a jar of coffee and a packet of biscuits.*
→ Only two items joined by “and” → no comma needed.
✔ Already correct: *Please buy a jar of coffee and a packet of biscuits.*

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Sentence 4:
*I do not like coffee tea cola or milk!*
→ List of 4 things: coffee, tea, cola, milk → need commas between each.
✔ Corrected: *I do not like coffee, tea, cola, or milk!*

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Sentence 5:
*Do you prefer the red one or the white one?*
→ Only two choices → no comma needed.
✔ Already correct: *Do you prefer the red one or the white one?*

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Sentence 6:
*Is Tokyo the capital of Japan Korea or China?*
→ List of 3 countries: Japan, Korea, China → need commas.
✔ Corrected: *Is Tokyo the capital of Japan, Korea, or China?*

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Sentence 7:
*Tom is wearing grey shorts a white shirt and a blue tie.*
→ List of 3 clothing items: grey shorts, a white shirt, a blue tie → need commas.
✔ Corrected: *Tom is wearing grey shorts, a white shirt, and a blue tie.*

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Sentence 8:
*Did you remember to buy some pencils and erasers?*
→ Two items only → no comma needed.
✔ Already correct: *Did you remember to buy some pencils and erasers?*

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Sentence 9:
*My brother is tall dark and handsome!*
→ Three adjectives describing brother: tall, dark, handsome → need commas.
✔ Corrected: *My brother is tall, dark, and handsome!*

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Sentence 10:
*Sue likes sewing knitting reading and walking.*
→ Four activities: sewing, knitting, reading, walking → need commas between each.
✔ Corrected: *Sue likes sewing, knitting, reading, and walking.*

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Final Answer:

1. I enjoy reading, swimming, and playing with my friend.
2. On Mondays, we have English, Maths, and Art.
3. Please buy a jar of coffee and a packet of biscuits.
4. I do not like coffee, tea, cola, or milk!
5. Do you prefer the red one or the white one?
6. Is Tokyo the capital of Japan, Korea, or China?
7. Tom is wearing grey shorts, a white shirt, and a blue tie.
8. Did you remember to buy some pencils and erasers?
9. My brother is tall, dark, and handsome!
10. Sue likes sewing, knitting, reading, and walking.