---Do you know the danger caused by smoking?---Yes, too many cigarettes can lead to_______ lung cancer.

In his speech, Premier Wen Jiabao points out that creativity is ______it takes to keep a nation highly competitive .  

 You can do it ______ you like; it really doesn’t matter.

—____________ difficulty you meet, remember that it might just be a touchstone. —You are right. __________ difficult it is, we will never give in.

 The man remained __________ he was and waited for his wife who was shopping in the market.