you don’t know is that I spend little time I had with my kids.A. That; thatB. What; howC

问题补充：

you don’t know is that I spend little time I had with my kids.

A. That; that

B. What; how

C. What; what

D. That; how

答案：

A. That; that

B. What; how

(答案→)C. What; what

D. That; how

解析：句意：你不知道的是我和孩子在一起的时间是多么少。第一空是连接主语从句的连接词，因为主语从句缺少宾语，所以用what连接主语从句，第二空是感叹句，因为修饰little time（名词），所以用what引导感叹句，选C。