Question

3. You should join the Ocean Life Club. 

=>

 4. The man whom I worked with was very nice.

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Answer 1

3. You should join the Ocean Life Club. 

=> If I were you, I would join the Ocean Life Club.

 4. The man whom I worked with was very nice.

=> I worked with a man who was very nice.

Answer 2

3. If I were you, I would join the Ocean Life Club.

4. I worked with a man who was very nice