in oredr not to be disturbed,i spent three days ()up in my study

问题描述:

in oredr not to be disturbed,i spent three days ()up in my study
locking
being locked
to look
locked
答案是第四个来着,为什么呢

locked是过去分词短语作主语的补语,进一步说明情况,给你个例子eg.The animals you eat had to spend their lives crowded together in tiny spaces.这里类似的,crowded是为了进一步说明动物的生活状况,所以用过去分...