2. This house was built by my grandfather in 1943.
3. Guernica was being painted by Picasso at that time.
4. The office has been cleaned by the cleaner.
5. Three books had been written by him before 1867.
Объяснение:
2. This house was built by my grandfather in 1943.
3. Guernica was being painted by Picasso at that time.
4. The office has been cleaned by the cleaner.
5. Three books had been written by him before 1867.
Объяснение: