English grammar worksheet focusing on relative clauses, featuring exercises to practice using correct relative pronouns.

Exercise: Relative Clauses

#### Ex1: Fill in the blank with the correct relative pronoun.

1. There are eighteen different kinds of penguins ______ live south of the equator.
- Correct Answer: D. which
- Explanation: The relative pronoun "which" is used to refer to things (in this case, "penguins"). It connects the main clause ("There are eighteen different kinds of penguins") to the relative clause ("live south of the equator").

2. Thank you very much for the present ______ you sent me.
- Correct Answer: D. that
- Explanation: The relative pronoun "that" is used here because it refers to a thing ("the present"). "That" can be used when the noun being referred to is specific or when the information is essential.

3. This is Mrs. Jones, ______ son won the championship last year.
- Correct Answer: D. whose
- Explanation: The relative pronoun "whose" is used to show possession. Here, it indicates that Mrs. Jones's son won the championship.

4. His girlfriend, ______ he trusted absolutely, turned out to be an enemy spy.
- Correct Answer: B. who
- Explanation: The relative pronoun "who" is used to refer to people. Here, it refers to "his girlfriend."

5. The bus crashed into a queue of people, four of ______ were killed.
- Correct Answer: C. whom
- Explanation: The relative pronoun "whom" is used when the noun being referred to is the object of a verb or preposition. Here, "four of whom" means "four of the people."

6. A man bought in a little girl, ______ hand was cut by flying glass.
- Correct Answer: A. whose
- Explanation: The relative pronoun "whose" is used to show possession. Here, it indicates that the little girl's hand was cut by flying glass.

8. He paid me $5 for cleaning ten windows, most of ______ hadn’t been cleaned for at least a year.
- Correct Answer: D. which
- Explanation: The relative pronoun "which" is used to refer to things (in this case, "windows"). It connects the main clause to the relative clause.

10. The chair in ______ I was sitting suddenly collapsed.
- Correct Answer: B. which
- Explanation: The relative pronoun "which" is used here because it refers to a thing ("the chair"). The preposition "in" is part of the phrase and determines the use of "which."

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#### Ex2: Choose the best answer.

1. She gives her children everything ______ they want.
- Correct Answer: A. that
- Explanation: The relative pronoun "that" is used here because it refers to a thing ("everything"). It connects the main clause to the relative clause.

2. Tell me ______ you want and I will try to help you.
- Correct Answer: B. what
- Explanation: The word "what" is used as a relative pronoun here to introduce a question or request. It functions as both the subject and object of the verb "want."

3. The place ______ we spent our holiday was really beautiful.
- Correct Answer: D. which
- Explanation: The relative pronoun "which" is used here because it refers to a thing ("the place"). It connects the main clause to the relative clause.

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Final Answers:

1. D. which
2. D. that
3. D. whose
4. B. who
5. C. whom
6. A. whose
8. D. which
10. B. which

Ex2:
1. A. that
2. B. what
3. D. which

Boxed Final Answer:
```boxed{
1. D, 2. D, 3. D, 4. B, 5. C, 6. A, 8. D, 10. B
Ex2: 1. A, 2. B, 3. D
}
```