Birds and animals eat insects,but all of them________together kill insects far fewer than spiders.

分类: 作业答案 • 2022-03-02 16:31:32

问题描述：

Birds and animals eat insects,but all of them________together kill insects far fewer than spiders.
A.have been put B.being put C.put D.to be put

答

B
句中已经有动词 kill 所以不用A,C
to be put表将来,不合语境
用B