【问题】 I didn.t answer the phone _____ I didn.t hear it ring.AifBunlessCalthoughDbecause

I didn.t answer the phone _____ I didn.t hear it ring.AifBunlessCalthoughDbecause

正确答案:D

题目解析:本题出自江苏开放大学,江苏开放大学大学英语A作业2,由丰阳塔题库搜集整理。