1. Define the following oppositions and say what grammatical categories they constitute: go: : went, goose :: geese, is done :: has been done, did :: have done
will have : : will be having, film : : films, boy : : boy’s, waiter :: waitress,
2. Do the morphemic analysis of the following words:
disadvantaged, stronger.
3. Arrange the words in groups, their grammatical form being taken into consideration:
Will speak, went, sends, has come, is done, men, knives, built, are reading, broke, longer, illustrated, biggest.

Mardi Gras - an ancient Russian folk festival , was transformed into a moment of pre-Christian times , remaining after the Baptism of Russia . Mardi Gras has been accepted by the church as their own religious holiday and renamed Cheese week. However, the essence of the carnival it has not changed . Mardi Gras falls on the week , the upcoming Lent . For this reason, at this time people were resting in front of a heavy and long Lent. Mardi Gras is always celebrated with a very abundant feast . During the celebration of the carnival was made to eat a lot. Some believed the people that whoever Carnival meet in sadness , boredom and spend the whole year until the next winter wires . Shrovetide uncontrollable eating all sorts of dishes and fun is a harbinger of prosperity and success in the home and business endeavors. Pancakes required "satellite" Carnival , symbolized the sun. Time passes, life , with the Baptism of Russia , new holidays, but continued to celebrate carnival . Shrove Tuesday met with the same irrepressible joy that in the Old Slavic century.Mardi Gras - it's not a day of celebration. This weekly ritual feast with driving round dances , dances , songs and merrymaking . An important element is the burning rag stuffed Winter.Farewell to the Carnival ended with the first day of the Orthodox Great Lent " Clean Monday , " is considered the day of circumcision . Clean Monday necessarily all residents washed in the bath , washed the dishes and cleaned utensils .

1. No smoking.
You mustn't some here.
2. No parking on the square.
You may not park on the square.
3. Visitors welcome 24 hours a day.
You may visit this place 24 hours a day.
4. No alcoholic drinks under 18.
You cannot have alcoholic drinks if you are under 18.
5. Don't use the office phones for private calls.
You shouldn't use the office phones for private calls.
6. Private. Keep out.
You mustn't tresspass this private territory.
7. Club members use courts free on Saturday and Sunday.
You needn't pay on Saturday and Sunday if you are a club member.
8. Walk your dogs here.
You may walk your dogs here.
9. Phone us. We'll help.
You can phone us for help.
10. For sale. Come and have a look.
You can come and have a look at the property which is on sale now.
11. Room for smokers.
You can smoke in this room.
12. Leave your car here.
You should leave your car here.
13. Don't swim here.
You mustn't swim here.
14. Keep silence.
You may not talk in here.
15. Don't take photographs.
You mustn't take photographs here.