___I think disappoint the Smiths is that their child is crazy about online game,A that B Why C waht D whether但是不知道怎么翻译的?为什么选C

问题描述:

___I think disappoint the Smiths is that their child is crazy about online game,
A that B Why C waht D whether
但是不知道怎么翻译的?为什么选C

先把 i think 挑出来,不看,因为做插入语,然后 ____ disappoint the Smiths 一起做主语,在这个主语从句中缺主语,选择what.
翻译成 我认为使史密斯一家失望的事情是他们的孩子对于网上游戏很疯狂