Thanks so much 
I looked at it. Here especially: Self-paced reading task// A bug in the flow
But I just can’t understand how I will get the sentences and comprehension questions together in one excel sheet. I mean, if I write each question after each sentence in the sheet, will it be okay? Or do they (sentences&questions) need to be in two different excel sheets? I’m so sorry, I’m just very very new to PsychoPy and I have nobody to help me so I’m trying to learn and do it by myself, thanks a lot