| Subject | English | Russian |
| gen. | in lesson time | во время урока (bookworm) |
| gen. | in lessons | на уроке (In Vrubivka, too, incoming fire landed just metres away from the local school at a time when 37 children aged between six and 11 were in lessons.) |
| ed. | take an active part in lessons | проявлять активность на уроках (Andrey Truhachev) |
| ed. | take an active part in lessons | быть активным на занятиях (Andrey Truhachev) |