Verified answer

The whole point of all these "tu amigo tiene problemas" exercises is to drive home the point that the commands for "tú" change depending on whether they're affirmative or negative. If you wanted to say "DON'T talk in class" you'd say "No hables en clases", but in this case (you want your friend to speak up) you say "Habla en clase". If you answer "Hables en clase" it'll be marked wrong.

Your friend has problems.write commands,use the verbs in the parenthesis to give him your advices.

muchas veces tengo miedo de hablar en clase.

Most of the times I'm afraid to talk in the class.

(ser timido/ hablar)(to be shy/to talk)

and since he is your friend you can use the informal way (tu)

ser > seas

no seas timido : don't be shy

hablar>hables

hables en la clase : talk in the class