【单选题】The number of adult smokers may be ________, but smokers between the ages of 13 and 23 have actually increased by 10 percent over the last 10 years.
【单选题】The number of adult smokers may be _______ , but smokers between the ages of 13 and 23 have actually increased by 10 percent over the last 10 years.
【简答题】The number of smokers may be (shrink)____, but smokers between the ages of 13 and 23 have actually increased by 10 percent over the last 10 years.
【单选题】The number of adult smokers may be ______, but smokers between the ages of 13 and 23 have actually increased by 10 percent over the last 10 years..