Defining and Non-Defining relative clauses (Who & That)

1. The engineer ____ designed the bridge received an award.

•    - a) who

•    - b) which

•    - c) whose

• - d) whom

2. The technique ____ they applied improved efficiency.

•    - a) who

•   - b) which

• - c) that

• - d) whose

3. The chef ____ created this dish is very famous.

•    - a) who

•   - b) which

•   - c) whose

•   - d) whom

4. The strategy ____ they implemented increased sales.

• - a) who

• - b) which

•   - c) that

• - d) whose

5. The musician ____ composed this song won a Grammy.

•    - a) who

•   - b) which

• - c) whose

• - d) whom

Add commas where necessary in the following sentence, If it doesn't need commas just rewrite it:

The doctor works at the central hospital is very renowned. (Who)

Answer explanation

The correct sentence is: 'The doctor who works at the central hospital is very renowned.' The clause 'who works at the central hospital' is essential for identifying the doctor, so no commas are needed.

Add commas where necessary in the following sentence, If it doesn't need commas just rewrite it:

The machine we bought last year broke down. (that)

Answer explanation

The sentence does not require any commas. It is clear and correctly structured as 'The machine we bought last year broke down.' The phrase 'we bought last year' is essential to the meaning of the sentence.

Add commas where necessary in the following sentence, If it doesn't need commas just rewrite it:

My sister lives in Canada is coming to visit. (who)

Answer explanation

The correct sentence is: 'My sister, who lives in Canada, is coming to visit.' Commas are needed to set off the non-restrictive clause 'who lives in Canada,' providing additional information about the sister.

Add commas where necessary in the following sentence, If it doesn't need commas just rewrite it:

The book you lent me is very interesting. (that)

Answer explanation

The sentence does not require any commas. It is clear and correctly structured as 'The book you lent me is very interesting.'

Add commas where necessary in the following sentence, If it doesn't need commas just rewrite it:

 The teacher teaches mathematics won an award. (who)

Answer explanation

The correct sentence is: The teacher who teaches mathematics won an award. The clause 'who teaches mathematics' is essential for identifying which teacher is being referred to, so it needs to be included.