请问这个表语从句应该选哪个,为什么?______ surprised me most was that such a little boy of seven cocould play the piano very well.刚才没打完整。

请问这个表语从句应该选哪个,为什么?______ surprised me most was that such a little boy of seven cocould play the piano very well.刚才没打完整。
请问这个表语从句应该选哪个,为什么?______ surprised me most was that such a little boy of seven co
could play the piano very well.刚才没打完整。

请问这个表语从句应该选哪个,为什么?______ surprised me most was that such a little boy of seven cocould play the piano very well.刚才没打完整。
what,该句子是主语从句,What surprised me most(主语） was谓语 that such a little boy of seven co宾语从句

what 引导主语从句，在句中充当双重成分，作surprised 和was的主语

what 说不出为什么，读下来就感觉是这个-0-

what

what 引导主语从句，在句中充当双重成分，作surprised 和was的主语