________ at the door before you enter my room, please. A．Knock B．Knocking C．Knocked D．To knock
2022-12-30 17:34:04 41次 2014届山西省高二暑假考试英语试卷（解析版） 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
________ at the door before you enter
my room, please.
|
A．Knock
|
B．Knocking
|
C．Knocked
|
D．To knock
|
本题链接：
