Who…………….That : When applied to people ‘WHO’ is preferred to ‘ That’.  But after superlatives, only,  all,  any  and  ‘it is’  OR  ‘it was’  etc  ‘ THAT’ is preferred to ‘ Who ‘.

Examples for ‘ WHO ‘ preference.

• He is the boy who got the first prize.
• The man who is in charge of the library has not come.

Examples for ‘ THAT ‘ preference.

• Sachin is the best batsman that played in the last world cup. ( the best batsman – superlative)
• Dr.K.J.Yesudas is the only singer that has performed in more than fifteen thousand stages.( the only)
• Any musician that wants to sing in Guruvayoor Melpathoor Auditorium should have enough experience.( any musician)
• It is the manager that takes important decisions in our office.( it is the manager)
• All the people that were present liked the programme.( all the people)