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

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
英语人气:462 ℃时间:2020-06-03 10:13:52
优质解答
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
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