Помогите с английским 7,8 задание

7 задание:
Haven't lived
Have
Have bought
Sailed
Been
Did you meet
8 задание:
1. D. I. Mendeleev was a famous Russian chemist. He developed the periodic table of the properties of the chemical elements.
2. He was born in 1839 in Tobolsk
3. He studied chemistry at the University of St. Petersburg.
4. In 1893 he became director of the Bureau of Weights and Measures in St. Petersburg and held his position until his death in 1907