| Verb: knock | Past Participle: knocked | Gerund: knocking |
| [I] I will knock |
| [you, we, they] You will knock |
| [he, she, it] He will knock |
The old building is being knocked down.![]() |
All of the English activities with description in Arabic, 汉语, English, Français, Deutsch, Indonesian, Italiano, 日本語, Portuguêes, Русский, Español,