Cigarette smoking is a major factor contributing to cancer.请问contributing改成leading对吗?

CIGARETTE SMOKING IS DANGEROUS TO YOUR HEALTH是什么意思 Smoking a cigarette 中文意思 Cigarette smoking is a major factor contributing to cancer.请问contributing改成leading对吗? What brother is smoking is not a cigarette,but loneliness!如何从语法上去分析这句话. cigarette smoking是什么意思rt词典里没有这种表示形式 Someone caught the boy smoking a cigarette.（改被动） 英语句子结构分析 he stood there smoking a cigarette If someone is smoking on the bus,we should ask,Could you please___that cigarette?A.put on B.put up C.put off D.put out 英语翻译Use an ash receiver and put out the cigarette completely when you finish smoking.Be very careful where you put down your lighted cigarette.It is not good manners to put cigarette ends every-where.Sometimes it might cause fire --- is tom still smoking?--- Is Tom still smoking?--- No.By next Saturday he ______ for a whole month without smoking a single cigarette.A.will be B.will have gone C.will have been D.has been going 为何不选C呢? She works hard ;it's very r for her to miss a day at school.He i all the no smoking signs and lit up a cigarette.We regret this service is t unavailable.Please come tomorrow.都是首字母填空, smoking is allowed 为什么用smoking? Someone is smoking.对smoking提问 短文填空if we watch a cigarette box,we(1)____smoking is harmful to your health 选择恰当的词语并用其正确形式填入短文中become stop find learn because and they allow many behavior usual fewif we watch a cigarette box,we(1)____s 吸烟用英语怎么说不要用smoking要用上动宾结构,带上cigarette的 After reading an article entieled'Cigarette Smoking'这里的after reading是什么语法 thank you--- Is Tom still smoking?--- No.By next Saturday he ______ for a whole month without smoking a single cigarette.A.will be B.will have gone C.will have been D.has been going 为什么选B不选C.选B应该怎么讲?为什么? 怎样区别将来完成时与将来完成进行时-——Is Tom still smoking?—— No.By next Saturday he___for a whole month without smoking a single cigarette.A.will be B.will have gone C.will have been D.has been going为什么要用将来完