What we saw is different from_________是what we have heard 还是what we heard 简述理由 谢
问题描述：
What we saw is different from_________是what we have heard 还是what we heard 简述理由 谢
答
What we saw is different from_what we heard________
前半句what we saw用的是过去时,后半句what we heard也是过去时,对应的
what we have heard是现完,时态不一致.