Suddenly he found what is wrong.有没有语法错误最好几分钟回答

Suddenly he found what is wrong.有没有语法错误最好几分钟回答
Suddenly he found what is wrong.有没有语法错误
最好几分钟回答

Suddenly he found what is wrong.有没有语法错误最好几分钟回答
was
found是过去时了,那从句就要是过去时.

正确的是：
Suddenly he found out what was wrong.

Suddenly he found what was wrong.