1.
how would you command someone not to breathe (respirar), using the tú command? (2 points)
2.
how would you command someone not to read (leer), using the tú command? (2 points)
3.
how would you command someone not to speak (hablar), using the tú command? (2 points)
4.
what is the affirmative tú command of poner? (2 points)
5.
what is the affirmative tú command of ser? (2 points)
6.
what is the affirmative tú command of salir? (2 points)

The most common word we use the negate a statement is no. Commands are part of the imperative mood. So we need to conjugate the verb respirar in the imperative mood. If the sentence is affirmative, we just say respira as a command, since the sentence is negative, then the command is:

No respires

In this sentence, we have the verb leer that means to read. So we need to conjugate the verb leer in the imperative mood. If the sentence is affirmative, we just say lee as a command that matches the tú form, since the sentence is negative, then the command is:

No leas

In this sentence, we have the verb hablar that means to speak. Hence we need to conjugate the verb hablar in the imperative mood. If the sentence is affirmative, we just say habla as a command that matches the tú form, since the sentence is negative, then the command is:

No hables

Unless the previous sentence, we use the affirmative form here. Furthermore, we need to conjugate the verb poner matching the second person singular tú, that is, we must use the tú command. Therefore, pon is the conjugation of the verb poner that matches tú in the imperative mood.

The verb ser has several uses. So we use this verb to talk about permanent or lasting attributes. In this way, this verb stands for descriptions, occupations, characteristics, time, origin and relationships. So we just say sea when using the affirmative tú command of the verb ser.

We also use the affirmative form here. Furthermore, we need to conjugate the verb salir matching the second person singular tú, that is, we must use the tú command. Therefore, sal is the conjugation of the verb salir that matches tú in the imperative mood. It's important to say here that all the commands above are given in informal form because the subject pronoun tú is the informal form of the second person singular.

el transporte público es bueno. los autobuses siempre llegan a tiempo.