Вкаком времени указанны данные предложения? 1.serious crop diseases were caused by bacteria. 2. the national average yields of various cereals are shown in table 3. 3. the farmers are building new houses for their families. 4. only 40 per cent of the last years supply of potatoes has reached the storages by now.

1.Serious crop diseases were caused (Past Simple Passive) by bacteria.

2. The national average yields of various cereals are shown (Present Simple Passive) in Table 3.

3. The farmers are building (Present Continuous Active) new houses for their families.

4. Only 40 per cent of the last years supply of potatoes has reached (Present Perfect Active) the storages by now.