Answer:
Yo conocí a mi amigo hace dos meses (I met my friend a few months ago)
Él quería un helado hace unas horas (He wanted an Ice Cream a few hours ago)
Ella supo la información porque leyó el periódico (She knew the information because she read the paper)
Él dijo que no podía hacer eso (He said he couldn´t do that)
Yo no quería ir al lago ese día (I didn´t want to go to the lake that day)
Explanation:
The form in past of the verb <em>conocer </em>(to know) is <em>conocí </em>if we speak in first person.
The form in imperfect preterit of the verb <em>querer </em>(to want) is <em>quería </em>if we are speaking in third person. That is different from <em>quiso </em>which would be the correct form if we are forming a sentence in preterite.
The form of the verb <em>saber </em>(to know) in preterite is <em>supo </em>if we speak in third person.
The form in imperfect preterit of the verb <em>poder </em>(can) is <em>podía </em>if we are speaking in third person. That is different from <em>pudo </em>which would be the correct form if we are forming a sentence in preterite.
The form in imperfect preterit of the verb <em>no querer </em>(don´t want) is <em>quería </em>if we are speaking in first person. That is different from <em>quise </em>which would be the correct form if we are forming a sentence in preterite.