Ⅲ.完成句子 1．Don't let the children ________ ________ ________ ________ ________ (染上……的习惯)going to bed late. 2．One cannot be successful in business unless one is willing to ________ ________ ________ (冒险)． 3．________ ________ ________ ________ ________ (尽管有困难), we must carry the work to completion. 4．In Britain, ________ ________ ________ ________ (……是违法的)drive when you are drunk. 5．________ ________ ________ ________ ________ ________ ________ (由你决定) when we will start.