首页 > 中学英语试题 > 题目详情
—— I can’t get through to the general manager’s office anyhow. —— The line is busy. Someone _____ t...
题目内容：
—— I can’t get through to the general manager’s office anyhow.
—— The line is busy. Someone _____ the telephone.
A. must use B. uses C. must have been using D. must be using
本题链接：