Answer:
Ése es le hombre que arreglo mi lavadora.
Ruben Blades, quien es de Panamá, es un cantante muy bueno.
No traje lo que necesito para la clase de matematicas.
¿Te gusta la manta que te compró Cecila?
Explanation:
The subordinate noun sentence complements the subject of the sentence, is preceded by a subordinate nexus or a verb in the infinitive, and can be replaced in the sentence by a noun or by a demonstrative pronoun, such as "that", "this" or " that".
Well, if you want the answer for "I would tell them to know what they want to do before going to college", then it's " Les diría que sepan lo que quieren hacer antes de ir a la universidad "