This kind of food ( ) cool ,clean according to the instrution.A.should be placed B.must be kept选B,为什么?O(∩_∩)O谢谢

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Thiskindoffood()cool,cleanaccordingtotheinstrution.A.shouldbeplacedB.mustbekept选B,为什么?O(∩_∩)O谢谢Thisk

This kind of food ( ) cool ,clean according to the instrution.A.should be placed B.must be kept选B,为什么?O(∩_∩)O谢谢
This kind of food ( ) cool ,clean according to the instrution.
A.should be placed B.must be kept
选B,为什么?O(∩_∩)O谢谢

This kind of food ( ) cool ,clean according to the instrution.A.should be placed B.must be kept选B,为什么?O(∩_∩)O谢谢
Keep +adj.
be placed in sp.
应该是这样的.