We are more concerned than ever, it seeems, (45) the water we drink and the air we breathe, and are smoking less, though not yet drinking less alcohol A. than B. about C. for D.
We are more concerned than ever, it seeems, (45) the water we drink and the air we breathe, and are smoking less, though not yet drinking less alcohol
A. than
B. about
C. for
D. hence