In order not to be disturbed,I spent three days( )up in my study.

问题描述:

In order not to be disturbed,I spent three days( )up in my study.
A.locking B.being locking C.to lock D.locked

选B 且B应改为being locked
这是一个句型,spend time doing sth.而这里“我”是被锁,故应选B