cut off cut down区别

cut off cut down区别
0.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

cut off 切掉,剪下；切断,断绝
cut down 砍倒；削减；压缩
它们是动副词短语,如果是介词必须放在动词和副词之间,所以,排除A和C.
cut down trees 砍伐树木 如果trees 改为them,则放中间
答案：D

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