My biggest problem is ___I am too busy.I al_ways have too much to do every day.A which B whenC what D that 这是跟上面连在一起的

My biggest problem is ___I am too busy.I al_ways have too much to do every day.A which B whenC what D that 这是跟上面连在一起的
My biggest problem is ___I am too busy.I al_ways have too much to do every day.A which B when
C what D that
这是跟上面连在一起的

My biggest problem is ___I am too busy.I al_ways have too much to do every day.A which B whenC what D that 这是跟上面连在一起的
应该选D.
因为后面是一个完整的句子,可以做从句.
所以应该填that,意思是：
我最大的问题就是我太忙了.

D
that 引导后面的从句 I am too busy是个完整的句子

选D.that

答案：D
解释：that 引导表语从句，作is 的表语。
翻译：我最大的问题就是我太忙了，我每天总是都有很多事情要做。
祝你学习进步，更上一层楼！(*^__^*)
有不会的可以再问我:）