Question

【题目】We must plant more trees after we _______ every year.
A.cut off them
B.cut them off
C.cut down them
D.cut them down

Answer 1

【答案】D
【解析】句意：我们必须每年在砍掉树木之后种植更多的树。cut off切断；cut down砍倒。根据前文的trees可知砍伐树木用cut down，作宾语的代词them应放在cut与副词down之间，所以答案是D。