Перевести 4 дм 3 см в метры. ( в виде десятичной дроби)

Open the blackets. Put the verbs into the Past Indefinite. 1. Her son (to stake) yesterday evening. 2. Children (njt to help) their mother about the house. 3. My uncle (to shake) yesterday evening 4. His aunt (to drink) coffee for breakfast yesterdsy. 5. my little sister (to skip) yesterdsy. 6. His parent (not to ski) last month. 7. the girls (to run) at the school spotts ground last weel. 8.My cousin (not to do) his homework yesterday morning. 9. I (to swim) last yeat.

Почему считается, что при Борисе Годунове окончательно сформировалась система крепостного права?

какой корень в слове ученик?