основные нормы построения текста.Типы речи

Что показывает относительный показатель преломления среды? СРОЧНО!

Взаимодействует ли цинк с солями?

AlCl3, AgNO3, PlCl2        если да, запишите реакции

дробь 6 3/7 : на дробь 1 6/7 =4.5:y

Put the verbs in brackets in the Passive voice
1. His new book ... next year. (to finish) 2. Flowers ... in shops and in the streets. (to sell) 3. This text ... at the last lesson. (to translate) 4. This street ... already ... because of snow. (to close) 5. Potatoes ... yesterday. (to buy) 6. This house ... in 1930. (to build) 7. A cinema is a place where films ... . (to show) 8. Two men tried to sell a picture that ... . (to steal 9. One of the theatres in our city ... now. (to reconstruct)
Help me please! :c