I. Make up interrogative and negative sentences:
MODELS:
+ They have offered a continental breakfast.
? Have they offered a continental breakfast?
- They have not offered any continental breakfast.
+ The waiter has already come.
? Has the waiter come yet?
- The waiter has not come yet.
1. The kitchen helpers have peeled the vegetables.
2. They have already cut up the vegetables.
3. I have arrived in time.
4. The convention has ordered a banquet.
5. The storekeeper has already brought the linen.
6. The customers have asked for full board.
7. We have had a full English breakfast.
8. The hostess has already seated the guests.
9. I have already mixed you a drink.
10. The tourists have been to a luxury restaurant.
11. The chef has already made his special dish.
12. The banquet has already begun.
13. This restaurant has already gained a good reputation.
14. The waiter has left the cruet on the table.
11 parks - [s], 12 spaceships - [s], 13 mountains - [z], 14 cities - [iz], 15 towns - [z], 16 villages - [iz], 17 farms - [z], 18 rivers - [z], 20 houses - [iz].