Question

【题目】Trees are very important. We can't .
A.cut it down
B.cut down it
C.cut them down
D.cut down them

Answer 1

【答案】C
【解析】句意：树木非常重要，我们不能砍伐。前文中的trees为复数形式，用代词them替代；cut down为动副词组，代词放中间。所以答案是C。