根据句意或首字母填空,每空一词。 1. He's on duty (值日) today. He n_____ to clean the desk. 2. He is always ill. We call him a _____ boy. Now he is ill in the h_____. 3. The boy was w _____that he would fail the exam. 4. —L_____! She is_____ her bike in the street. —Sorry, I can't s_____ 5. —Thanks a lot. —_____ _____ = _____ _____ _____.