she went out to see what Aishappening B is happend Cwas happening D was happened 为什么she went out to see what Aishappening B is happend Cwas happening D was happened 为什么

问题描述:

she went out to see what Aishappening B is happend Cwas happening D was happened 为什么
she went out to see what Aishappening B is happend Cwas happening D was happened 为什么

She went out to see what (C.was happening).她出去看发生了什么事情.括号部分中是宾语从句,时态要和主句一致,不可能是现在时态.所以A项is happening和B项is happend就先排除了.happen是不及物动词,不可能有被动语...