English grammar worksheet focusing on using "and," "but," and "or" correctly.

Task: Fill in the missing word using "and," "but," or "or."

#### Explanation:
The task requires you to choose the appropriate joining word ("and," "but," or "or") to complete each sentence. Here's a breakdown of how to approach each sentence:

1. "And" is used to connect two related ideas that are similar or additive.
2. "But" is used to show contrast or exception between two ideas.
3. "Or" is used to present alternatives or choices.

Now, let's solve each sentence step by step:

---

1. My name is Mariam and my sister's name is Fatima.

- Reason: Both names are being stated as facts without any contrast or choice. They are additive.
- Answer: and

---

2. I'm 22 years old and my birthday is on Tuesday.

- Reason: Both statements are factual and related without any contrast or choice.
- Answer: and

---

3. I was born in Dubai but I live in Al Ain now.

- Reason: There is a contrast between being born in Dubai and currently living in Al Ain.
- Answer: but

---

4. My mother was born in Oman but she lives in The UAE now.

- Reason: Similar to sentence 3, there is a contrast between her birthplace and current residence.
- Answer: but

---

5. Is he a doctor or a nurse?

- Reason: This sentence presents a choice between two professions.
- Answer: or

---

6. My father is a police officer and he works at the police station.

- Reason: Both statements are related and additive; they provide more information about the same person.
- Answer: and

---

7. Is your bag big or small?

- Reason: This sentence presents a choice between two sizes.
- Answer: or

---

8. I don't eat fish, beef or chicken.

- Reason: This sentence lists options that are not eaten, so it uses "or" to indicate alternatives.
- Answer: or

---

9. I love dancing but my brother doesn't.

- Reason: There is a contrast between the speaker's love for dancing and their brother's lack of interest.
- Answer: but

---

10. I'm married. I live with my husband and our three kids.

- Reason: Both statements are related and additive; they describe who the speaker lives with.
- Answer: and

---

11. I don't speak German or French, but I speak a little Spanish.

- Reason: The first part presents alternatives (German or French), while the second part contrasts with the fact that the speaker speaks Spanish.
- Answer: or, but

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12. I have one son and two daughters, but my sister doesn't have any children.

- Reason: The first part connects the number of children (one son and two daughters), while the second part contrasts with the sister's situation.
- Answer: and, but

---

Final Answers:

1. and
2. and
3. but
4. but
5. or
6. and
7. or
8. or
9. but
10. and
11. or, but
12. and, but

Boxed Final Answer:

\[
\boxed{
\begin{array}{l}
1. \text{and} \\
2. \text{and} \\
3. \text{but} \\
4. \text{but} \\
5. \text{or} \\
6. \text{and} \\
7. \text{or} \\
8. \text{or} \\
9. \text{but} \\
10. \text{and} \\
11. \text{or}, \text{but} \\
12. \text{and}, \text{but}
\end{array}
}
\]