49 в 4 степени умножить на 7 в 5 степени и делить на 7 в  12 степени

Сколько метров пролетит свободно падающее тело за 4с после начала падения?

Выбери нужную форму глагола в  Present Continuous or Present Perfect.

                1.  Wait for me a little. I (am eating, have eaten) my breakfast now. 2. Nick (is writing, has written) a letter. When he finishes, we shall go to the post office. 3. Mary (is putting, has put) plates, forks, knives and cups on the table, so we shall have dinner. 4. Look at the child. He (is carrying, has carried) a basket full of plums. 5. Bob (is washing, has washed) his hands and is ready to help you with the dinner. 6. The family just (is having, has had) tea. 7. It is 12 o’clock. Vladimir Petrovich (is having, has had) his lunch. 8. We already (are doing, have done) this exercise. Shall we read the text? 9. Tom’s sister (is learning, has learnt) the English rhyme and now she may go for a walk with her friends. 10. I just (am walking, have walked) through the field.

разобрать слово древнейших как часть речи