-What do you think of your parents? ---They always let me do I think I should do.A. wh

问题补充：

---What do you think of your parents?

---They always let me do I think I should do.

A. when

B. that

C. how

D. what

答案：

A. when

B. that

C. how

(答案→)D. what

解析：考查宾语从句：句意：--你认为你的父母怎么样？--他们总是让我做我想我应该做的事情。第一个do后面是宾语从句，宾语从句中what做do的宾语，选D。