the food on the table tased bad,so it ----- just now.A:was discarded B:discarded C:is discarding为什么选A答案

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the food on the table tased bad,so it ----- just now.A:was discarded B:discarded C:is discarding为什么选A答案

the food on the table tased bad,so it ----- just now.A:was discarded B:discarded C:is discarding为什么选A答案
the food on the table tased bad,so it ----- just now.A:was discarded B:discarded C:is discarding为什么选A答案

the food on the table tased bad,so it ----- just now.A:was discarded B:discarded C:is discarding为什么选A答案
首先这是被动语态,一定要用到be 动词+动词 的过去分词这种形式,所以排除C,而句子里提到 just now.就是“刚刚”的意思,显然发生在过去,要用过去式,所以选A

just now 是刚才 过去时的被动语态