注意：此页面搜索的是所有试题
题目内容
（广西培贤国际职业学院-大学英语1）
21. (单选题) The three ______ working telephone lines are quite busy following the earthquake.(本题2.0分)
A. remaining
B. remained
C. having remained
D. remains
A. remaining
B. remained
C. having remained
D. remains
参考答案
