A recent research gives smokers one more reason to quit smoking. (i) _______ addition to affecting the lungs, (ii) _______ also damages the eyes. The more cigarettes people smoke and the (iii) _______ they do so, the greater the risk of damaging their eyes.
i. a. In b. Along
c. With d. Beside
ii. a. its b. which
c. it d. that
iii. a. frequent b. faster
c. oftener d. quick
