请选择DCBA+};_-`0L5p --Paper _______ wood. We should not waste paper.,a.K'h3f*_/D5u1q
--I agree. I always use ________ sides of paper.,a.K'h3f*_/D5u1q
A. is made of; either,a.K'h3f*_/D5u1q
B. is made from; both,a.K'h3f*_/D5u1q
C. makes of; both,a.K'h3f*_/D5u1q
D. makes from; either,a.K'h3f*_/D5u1q