This worksheet provides 17 practice sentences for students to classify as simple, compound, or complex.

To solve the problem, we need to identify whether each sentence is simple (S), compound (C), or complex (CX). Let's go through each sentence step by step:

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Key Definitions:

1. Simple Sentence: Contains only one independent clause (a subject and a predicate that can stand alone as a complete thought).
2. Compound Sentence: Contains two or more independent clauses joined by coordinating conjunctions (e.g., "and," "but," "or," "so," "for," "nor," "yet").
3. Complex Sentence: Contains one independent clause and at least one dependent clause (a clause that cannot stand alone as a complete sentence because it begins with a subordinating conjunction like "because," "although," "since," etc.).

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Analysis of Each Sentence:

#### 1. My phone is dead because I forgot to plug it in last night.
- Independent Clause: "My phone is dead."
- Dependent Clause: "because I forgot to plug it in last night."
- Type: Complex (CX)

#### 2. The lead in my pencil broke, but I can use this one.
- Independent Clause 1: "The lead in my pencil broke."
- Independent Clause 2: "I can use this one."
- Type: Compound (C)

#### 3. You need to take a shower before you go to bed tonight.
- Independent Clause: "You need to take a shower."
- Dependent Clause: "before you go to bed tonight."
- Type: Complex (CX)

#### 4. I want to give my grandpa a gift for his birthday.
- Independent Clause: "I want to give my grandpa a gift for his birthday."
- Type: Simple (S)

#### 5. I lost my tooth while I was eating an apple today!
- Independent Clause: "I lost my tooth."
- Dependent Clause: "while I was eating an apple today."
- Type: Complex (CX)

#### 6. As soon as Gina finished planting her flowers, she started to rain.
- Independent Clause: "she started to rain."
- Dependent Clause: "As soon as Gina finished planting her flowers."
- Type: Complex (CX)

#### 7. Quinn and her dad share the same birthday.
- Independent Clause: "Quinn and her dad share the same birthday."
- Type: Simple (S)

#### 8. My library book was overdue, so I had to pay a fine.
- Independent Clause 1: "My library book was overdue."
- Independent Clause 2: "I had to pay a fine."
- Type: Compound (C)

#### 9. Track is Mason’s least favorite sport, yet it’s the sport he most excels at.
- Independent Clause 1: "Track is Mason’s least favorite sport."
- Independent Clause 2: "it’s the sport he most excels at."
- Type: Compound (C)

#### 10. Unless I receive an email from Jill by tomorrow morning, I am going to proceed with planning the party myself.
- Independent Clause: "I am going to proceed with planning the party myself."
- Dependent Clause: "Unless I receive an email from Jill by tomorrow morning."
- Type: Complex (CX)

#### 11. After roasting marshmallows by the campfire, Lee told ghost stories.
- Independent Clause: "Lee told ghost stories."
- Dependent Clause: "After roasting marshmallows by the campfire."
- Type: Complex (CX)

#### 12. I have an announcement to make when everyone arrives.
- Independent Clause: "I have an announcement to make."
- Dependent Clause: "when everyone arrives."
- Type: Complex (CX)

#### 13. Although Leo was famished, he refused to eat the stew.
- Independent Clause: "he refused to eat the stew."
- Dependent Clause: "Although Leo was famished."
- Type: Complex (CX)

#### 14. If I don’t quiet down, my mom will never let me have a slumber party again.
- Independent Clause: "my mom will never let me have a slumber party again."
- Dependent Clause: "If I don’t quiet down."
- Type: Complex (CX)

#### 15. The baby was cranky, so I put her down for a nap.
- Independent Clause 1: "The baby was cranky."
- Independent Clause 2: "I put her down for a nap."
- Type: Compound (C)

#### 16. I can no longer eat salty foods like licorice, for I have braces now.
- Independent Clause: "I can no longer eat salty foods like licorice."
- Dependent Clause: "for I have braces now."
- Type: Complex (CX)

#### 17. Although I suspected I was wrong, I refused to admit my mistake.
- Independent Clause: "I refused to admit my mistake."
- Dependent Clause: "Although I suspected I was wrong."
- Type: Complex (CX)

---

Final Answer:

```
1. CX
2. C
3. CX
4. S
5. CX
6. CX
7. S
8. C
9. C
10. CX
11. CX
12. CX
13. CX
14. CX
15. C
16. CX
17. CX
```

Boxed Final Answer:
```boxed{
1. CX, 2. C, 3. CX, 4. S, 5. CX, 6. CX, 7. S, 8. C, 9. C, 10. CX, 11. CX, 12. CX, 13. CX, 14. CX, 15. C, 16. CX, 17. CX
}
```