Grammar: Selecting the Right Relative Pronoun
This question tests your understanding of relative pronouns, specifically which one correctly connects clauses and refers to the noun 'medicines'. Let's break down the sentence and the options.
Understanding Relative Pronouns
Relative pronouns (like who, whom, whose, which, that) introduce relative clauses, which provide more information about a noun. The choice depends on whether the pronoun refers to a person or a thing, and its function in the clause.
- Who/Whom/Whose: Used for people.
- Which: Used for things or animals, often in non-restrictive clauses (providing extra information, set off by commas).
- That: Used for people or things, often in restrictive clauses (essential to the meaning, not set off by commas).
- What: Means 'the thing that' or 'those things that' and introduces a noun clause.
- When: Refers to time.
Analyzing the Sentence
The sentence is: "Those medicines, ________ are used to treat kidney infection, have been withdrawn from the market."
Key parts:
- Subject: "Those medicines"
- Main Verb: "have been withdrawn"
- Relative Clause: "________ are used to treat kidney infection" - This clause provides extra information about "medicines". Since it's set off by commas, it's a non-restrictive clause.
Evaluating the Options
- what: "Those medicines, what are used..." This is grammatically incorrect. 'What' would typically start a noun clause, like "What is used to treat kidney infection...", but here we need a pronoun to refer back to 'medicines'.
- which: "Those medicines, which are used to treat kidney infection, have been withdrawn..." This fits perfectly. 'Which' refers to 'medicines' (things) and correctly introduces the non-restrictive clause providing extra information about the medicines.
- when: "Those medicines, when are used..." This doesn't make sense. 'When' refers to time, and the clause is describing the medicines themselves, not the time they are used.
- who: "Those medicines, who are used..." 'Who' is used for people, not for medicines.
Step-by-Step Conclusion
- The pronoun must refer to 'medicines', which are things. This rules out 'who'.
- The clause provides additional information about the medicines and is separated by commas, indicating a non-restrictive clause.
- 'When' refers to time, which isn't appropriate here.
- 'What' cannot function as the relative pronoun in this specific structure.
- 'Which' is the correct relative pronoun for referring to things in a non-restrictive clause.
Therefore, the correct word to complete the sentence is 'which'.
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Important Questions from Fill in the blanks
- The sentences given with blanks are to be filled with an appropriate word(s). Four alternatives are suggested for each question. For each question, choose the correct alternative.
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The man _____ for the purpose never did what was expected of him. - The sentences given with blanks are to be filled with an appropriate word(s). Four alternatives are suggested for each question. For each question, choose the correct alternative.
There was a serious _____ between the two brothers. In the following questions, one part of the sentence may have an error. Find out which part of the sentence has an error and click the button corresponding to it. If the sentence is free from error, click the "No error" option.
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