6．
David：You look so sad today, Lucy．What’s wrong with you?
Lucy：I quarreled with my husband this morning.
David：How come? You 61 (get) on quite well these years，right ?
Lucy：He has recently got into the bad habit of smoking，believing that smoking is 62 enjoyment．And I’m afraid his health will become worse 63 he doesn’t give it up．
David：I think you can find some ways 64 (help) him kick the bad habit．
Lucy：He always wants to quit， 65 it seems that he has been too addicted to smoking．David，can you help me?
David：Try to get his attention 66 (take)away when he wants to smoke．For example, you can let him eat some biscuits instead when he wants to smoke．You can also try electronic cigarettes 67 are said to contain no harmful chemicals．Remember, don’t expect him to give up smoking all at once．In other 68 ．decrease the number slowly．Let him smoke 69 (little) day by day, and then he might be able to quit smoking forever．
Lucy：Sounds great! I will try it at once．
David: By the way, I know a man who has 70 (success) quit smoking. You can turn to him for advice if necessary．