в основании восточно-европейской равнины залегают крупные тектонические структуры 

а)русская и скифская платформы

б)анабарский щит 

в)западно-сибирская платформа 

г)область древней складчитости 

Exercise 3. Form questions with the question words given. 1. The expedition is returning next week. When 2. We are doing grammar exercises now. What 3. The mother is teaching her little son to read. Who 4. I am reading a book on modern art. What 5. They were still arguing when I entered the room. Who Our group was staying in Vitebsk for some days. For how long We were talking and he was listening to the radio. What They will be moving to a new flat this month, When 9. We shall be listening to Petrov at the concert. When 10. He is coming tomorrow. When