WOOD ... IS USED TO MAKE PAPER.A. LANDB. PULPC. WORKD. CHIP B

31. - 3500 CAU TRAC NGHIEM ON TAP AV THCS
3500 CAU TRAC NGHIEM ON TAP AV THCS

31. Wood ... is used to make paper.

a. land

b. pulp

c. work

d. chip

 b