Farmers shouldn't keep _____ the forests but should continue _____ more trees.[ ]

A. cut down, plant

B. cutting down, to plant

C. to cut down, to plant

D. to cut down, planting

1783年，长沙制鞋业匠工数千人，集资重建火宫殿乾元宫，以纪念制鞋业的老祖宗，这位老祖宗是谁呢？