Answer:
"Puedo hacerlo"
Explanation:
"I can" means "puedo," then "hacerlo" means "do it." (The "lo" ending is the direct object, so it can be "hacerlo" or "hacerla" depending on what the object is.)
I want to help you but I can't read Spanish I wish I know how
Yo soy la hija de mis padres.
Mi hermanastro es el Hijo de mi madrastra.