When lost in reading,______ he often was ,he would forget all about eating or sleeping.

题目

When lost in reading,______ he often was ,he would forget all about eating or sleeping.
A.what B.so C.just like D.as
选什么,请解释just like 和as 在这里的区别是什么?

答案

D
just like里的like是介词,后面加名词短语,而as是连词,后面加一句话；他们在意思上没有区别