Respuesta :
Answer:
1. the man who sang at the concert has a...
2. We.. actors who played..
3. The girl who fell.. is hurt
4. The student who is walk.. is in my class
Explanation:
they are human so "who" is best appropriate. we can you that, but it's not the best idea
Answer:
The man who sang at the concert had a good voice
We enjoyed the actors who played the leading role
The girl that fell down the stairs is hurt
The student which is walking with ann is in my class