问题描述：
B．副词训练 1. As he was waiting downstairs, he suddenly heard a voice calling from ____ . A. over B. above C. up D. Upon |
考点提示：副词,副词的比较级,疑问副词,连接副词
最佳答案： | B |
| 略 |
B．副词训练1. As he was waiting downstairs, he suddenly heard a voice calling from ____ .A. over B. above
B．副词训练1. As he was waiting downstairs, he suddenly heard a voice calling from ____ .A. over B. above
最佳答案： 