it is no good (smoking).

We all know that it is no good ___into the habit of smoking. It is required that no smoking ______ in the school. There is a s___.It says "No smoking" There is a____. It say NO smoking 填什么呀 It's no good smoking.(普通行为） It's not good for you to smoke h ( )that sign mean"No smoking"?No,it means"Danger".A.Is B.Doe 用it is no good 造句? it is no good中的good是形容词吗? it's no good...thre is no need... It is clever ____ smoking. It is good for uncle sam to stop smoking（保持句意基本不变） Smoking is not good ----you,it will do harm ----your health.