Q: The professor highly recommends the student because he appreciates an inquisitive mind.
Who he is?
A: The professor

Q: The waitress noticed that Rebecca's glass was empty, so she handed her the glass to fill it.
Who she is?
A: Rebecca

Q: A series of injections are used to battle a type of cancer in patients because they have a special type of drug which counteracts this sickness.
Who they is?
A:
patients