The boy _____ mother is a doctor, studies hard

• Who

• Whom

• Whose

• Which

The professor, _____ research on quantum physics is well-known, will be presenting at the conference

• Who

• Whose

• Who's

• whom

The dog, _____ barked loudly, frightened the neighbors

• Who

• Whom

• Which

• Whose

She is the artist _____ paintings are famous worldwide

• Whom

• Who

• Which

• Whose

This is the house _____ my grandparents used to live in

• Who

• Which

• That

• Whose

She is the scientist _____ groundbreaking discoveries have revolutionized the field of medicine

• Whom

• Which

• Who

• Whose

The novel, _____ author won the Nobel Prize, is considered a classic

• Whom

• Who

• Whose

• Which

The company, _____ CEO is retiring next month, just announced a major merger

• Which

• Whom

• Who's

• Whose

The student, _____ essay impressed the teacher, received the highest grade in the class

• Who

• Whom

• Which

• Who's

This is the watch _____ my grandfather gave me for my birthday

• Which

• Who's

• Whom

• Whose