Dear Uncle, It's quite some time since we last ____ (聊天)online through Wechat. But recently your health seems to be ____ (下降). Therefore, I suggest that you are ____ (应该) to give up smoking ____ (尽快). As you know, smoking does great harm to our health. Smoking, apart from ____ (花费)you lots of money to buy, will also be harmful to the people around you, which is ____ (不公平的))to the non-smokers around. In addition, smoking will badly ____ (污染空气)where you are smoking.____ (因此)it is high time that you quitted smoking right away ____ (为了)your good health and that of others around you. Though it will be a difficult time for you, it will be well ____ (值得) of your great effort. Yours, Li Hua