The underlined parts have a mistake. Rewrite them correctly.

1. Tea is serving with milk and sugar. is served

2. Finally, everything are mixed together. is mixed

3. These biscuits is made with eggs and sugar. are made

4. Fewer vegetables are selling in winter. are sold

5. Cola is drinking in many countries. is drunk

6. Five more minutes until the potatoes have cooked. are cooked

7. The food for the party is preparing. is prepared

8. The meat for the salad are cut into small pieces. is cut