What thing caused a mess in the dryer? A. chewing gum B. a pen C. colored paperĐoạn văn1/103SECTION I: LISTENING (You will hear twice for each part) Part 1. Listen to the recording twice. Choose the correct answer for each of the following blanks. What thing caused a mess in the dryer? chewing gum a pen colored paperGiải thíchChọn B