To which sentence from the paragraph can we add the following clause? , so that he had plenty of time to get ready. [1] Everyday, Ahmad woke up one hour before the school bus arrived. [2] First, he spent about fifteen to twenty minutes to wash up and dress. [3] Then, he spent about twenty minutes to pack breakfast, lunch, tea, and a snack in a bag to bring with him. [4] Before walking out of the door, Ahmad always checked his bag to make sure he didn’t forget anything