Нужно поставить предложения в отрицание и вопрос 1)Dmitri Ivanovich Mendeleev was born on 8 february 1834. 2)In 1849 his family moved to Saint Peterburg. 3)In 1850 Mendeleev joined the Main Pedagogical Institute. 4)He married in April 1862. 5)Dmitri Mendeleev died in 1907.