Teo 1. John: ___ is your sister? Mary: The girl in front of our teacher.
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Teo1. John: ___ is your sister? Mary: The girl in front of our teacher.Generally, 'who' is used to refer to people. However, when asking about a choice, 'which' is used.
2. ___ is your brother, the tall boy or the short boy?
Which word should I use to fill in the above blanks, who or which?