题目

 What is the best way to catch someone who is telling a lie? For a long time, the traditional method of identifying liars was to watch their body language, including facial expressions.     According to a new study, body language cannot be trusted. Talking, it seems, is the best way to smoke out a liar. That is what researchers in the United Kingdom found out recently. Their investigation took place at one place where lying can get you into big trouble -- an airport. _____16______ 1.    ____17_____ These are the opposite of “Yes” and ‘No” questions. Open-ended questionI ________ my close friend three times today but her line was always busy.A. have phoned B. had phonedC. have been phoning D. was phoning