Smoking a lot may c____ cancer.
Smoking a lot may c____ cancer.
some experts say that smoking c____ will cause lung cancer
初二英语、smoking may cause cancer 对画线部分提问.cancer画线
you are smoking a lot
smoking ______(cause) cancer.
Smoking causes mouth cancer
Cigarette smoking is a major factor contributing to cancer.
Cigarette smoking is a major factor____to cancer.  
smoking can cause cancer就cancer提问
smoking can reason lung cancer
发现两条外烟上写的标语不一样,一条是Smoking causes a cancer.另一条是Smoking causes
Smoking is a major factor contribute to cancer.请分析一下这个句子.