Solve this with out using and,but & so

Dear Student,
The answers are:

1. I couldn't hear anyone when I called up. 
2. My brother took us to the play as we all enjoy it (the play).
3. Here is the lady whose sister is a chess champion.
4. A deer defends its young ones by fighting with courage.
5. She came to the school today even though she had high fever.

Hope this helps.

Regards