Give them a bewildered expression of perplexity. Make them shrug their shoulders and raise their hands. Ask them to place their palm on their chin as if they were pondering. Tell them to bite their lip. Cross their arms over their chest. Clench their fist. Roll their eyes. Shake their head from side to side. These are all ways to express confusion or doubt in a conversation. In writing, you can use punctuation to indicate that you're asking questions or making statements about someone's state of mind. For example, you can use exclamation points to show that you're being excited or surprised about something, question marks to ask for explanations or descriptions, and semicolons to say that one thing is leading to another. When you're describing a character's emotions or thoughts in detail, use present tense. When you want to show that something is happening now, or will be happening later, use the simple past tense. So, to write descriptively, use present tense when you're describing characters' feelings, reactions, and thoughts, and use the simple past tense when you want to show what was happening or will be happening soon.