Answer:
Answer for blank 1: No hables!
Answer for blank 2: Cállate!
Explanation:
Both in Spanish and English, when we use the imperative form we do not write the pronoun you. It is not necessary because it is understood that we are referring to the second person, we only write the verb which is expressing the command. Sometimes in Spanish, people use the personal pronoun TÚ (you) to emphasize the expression.
