I fell behind in my studies because I went through about four years of being to online g

问题补充：

I fell behind in my studies because I went through about four years of being to online games.

A. supposed

B. addicted

C. lost

D. contributed

答案：

A. supposed

(答案→)B. addicted

C. lost

D. contributed

解析：句意: 因为我曾经有四年沉溺于网络游戏，所以我现在的学习很落后。Suppose猜想；be addicted to沉溺于；lose失去；contribute贡献。根据句意故选B。