@Holliwood#:

Câu 31. I don’t know what made her quit her job. 
(reason) -> I don’t the reason he quit her job. 
Câu 32. He always checked his car tires before setting off on a journey.
(until) -> He never set off on a journey until his car tires.
Câu 33. Dr. Williams is a cardiologist and has surgery on the second floor. 
(whose) -> Dr. Williams, whose is on the second floor, is a cardiologist.

Bn tham kahor nhé

Câu 31. I don’t know what made her quit her job. 
(reason) -> I don’t ___the reason why___ he quit her job. 
Câu 32. He always checked his car tyres before setting off on a journey.
(until) -> He never set off on a journey ___until he checked___ his car tyres.
Câu 33. Dr Williams is a cardiologist and has his surgery on the second floor. 
(whose) -> Dr Williams, ___whose surgery ___ on the second floor, is a cardiologist.