Do you know___over there A.what happens B.what was happend C.what is happen D.what did happen为什么选C不选B呢

Do you know___over there A.what happens B.what was happend C.what is happen D.what did happen为什么选C不选B呢
Do you know___over there A.what happens B.what was happend C.what is happen D.what did happen
为什么选C不选B呢

Do you know___over there A.what happens B.what was happend C.what is happen D.what did happen为什么选C不选B呢
应该是选D,此处加did表示强调,“你知道那儿确实发生过什么吗?”happen是没有被动用法,如果使用为what is happenning还勉强可以选.

C？不对吧
应该是what happened 或者what is happening我们都没有这个选项啊！！！那这题错了为什么应该是那两个啊要么是已经发生了要么是正在发生，那些选项时态都不对啊那也应该是what was happend或那个啊 为什么没有was啊sth. happens，没有sth be happened的用法啊...

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C？不对吧
应该是what happened 或者what is happening

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B。what was happened.