Question

Staff are allowed to take a ten-minute break every two hours to relax, use the bathroom or do ___________ else is necessary.  

A．something

B．anything

C．whatever

D．what

Answer 1

C

如果把is necessary 去掉，倒是可以用something。但是很显然这是名词性从句中的宾语从句，只有C、D是关系词，选择C，做任何有必要做的事情。