题文
__________ at the door before you enter my room, please.
| A．Knock |
| B．Knocking |
| C．Knocked |
| D．To knock |
推荐试卷
__________ at the door before you enter my room, please.
| A．Knock |
| B．Knocking |
| C．Knocked |
| D．To knock |
试题篮
()
粤公网安备 44130202000953号
