Can someone please please do this for me please

Choose the correct use of the spanish preposition para in the following sentence. para aprender un idioma bien, hay que practicar fuera del salón de clases. "in order to," followed by an infinitive "to," referring to a destination "by," referring to a deadline intended for a goal or destination

Which part of this sentence is not correct? esta muchacha tan bonito es alta. a. muchacha b. bonito c. esta d. alta

Which word best completes the sentence? isabela: no puedes permitir entrar ni vendedores perros callejeros. a. nunca b. ni c. siempre d. alguien