Question

3、This book will show you ________ can be used in other contexts. A. how you have observed B. what

解释一下
7. This book will show you __________ can be used in other contexts..

A. how you have observed
B. what you have observed

C. that you have observed
D. how that you have observed 上面的那个不全的呢哈

Answer 1

B
缺宾语，所以应该用宾语从句，宾语从句由what引导 。
对于补充：一样的，还是选B，理由不变。
这是主谓宾宾结构，需要两个宾语。
__________ can be used in other contexts.这是一个宾语从句。

Answer 2

选B,括号以后是要接名词性状语从句 用what引导

Answer 3

B

Answer 4

B