My mother told me to clean my room and walk the dog .
,
?
!

Type of sentence:
command
statement
question
excitement

"clean your room and walk the dog" is a command.

"My mother told me to clean my room and walk the dog" is a statement.

Explanation:

Type of sentence: Command Statement/Command

Symbol: !

Explanation:

I'll try my best since I'm in mid school, but the sentence is an explamation mark (!) because your mom in this sentence is telling you to clean your room AND to walk your dog, this can't be a question because it doesn't include how, where, why, when, this can't be an excitement because it has a negative connotation, it could be a statement but it's not stating what you would do it's more of like a command because your mom is commanding you by simply telling you to clean your room and walk the dog.

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explanation:

and also the mystery girl it might be someone that she might know in her school