“Write sentences using appropriate tenses and putting one verb into the active and one
into the passive.”
1.we / might / take / on a school trip to the National Art Gallery next week, but I / not be / sure
_.
2.the police / catch / the forger after many of his paintings / sell
_.
3.a fire / start / in the theatre while a play / perform
_.
4.the museum that we / visit / build / over a hundred years ago
_.
5.I / certainly / not / invite / to Jake’s party because he / not like / me
_.

the nobel prizes are annual international awards bestowed by scandinavian committees in  recognition of cultural and scientific ad¬vances. they were established by the swedish chemist alfred nobel, the inventor of dynamite. the prizes in physics, chemistry, psychology or medicine, literature and peace efforts were first awarded in 1901. the sveriges riksbank prize in economic sciences in  memory of nobel was instituted in 1968. although this is not technically a nobel prize, its announcements and presentations are made  along with other prizes. each nobel prize is widely regarded as the most  prestigious award in its field. each  laureate is presented with a gold medal, a di¬ploma and a sum of money which depends on the nobel founda¬tion’s income that year. the prize cannot be awarded  posthumously , nor may a prize be shared among more than  three people.

1)how long have you been saving for christmas  and new year presents? - как долго ты копил на рождественские и новогодние подарки?

2)did you save enough money fоr the new year party? - ты накопил достаточно денег для новогодней вечеринки?

new year - a terrific holiday!   all decorated and everywhere flames, the house in the middle of the room grows prickly tree.  people in the new year become kinder and happier.everyone is busy with preparations for the celebration.  looking for decorations for christmas trees, the very tree, presents under the christmas tree.  children write letters to santa claus and anxiously waiting for the holiday.i like this winter festival is much more than a summer's day of birth.  because all my friends happy, and we give gifts to each other, and walk together on the tree.  this year we had three trees in the school and two more we arranged themselves, their family.  and that's not counting the very new year's evening!   i liked absolutely all trees.  each memorable in its own way.  the theater was a wonderful spectacle, a movie we watched the new year's fairy tale, high school students in the school gave us a jolly holiday with sweet gifts.  the most exciting time in the new year is by its own parish.  well, i have not allowed to sleep until twelve at night.  true, the previous two times, my brother fell asleep, but this year it worked out!   it was so solemn.  on television, the spassky tower began to beat the clock, we all stood up and congratulated each other on new year and all kissed.  then cut a big cake and ate a piece.  the street was very nice, the whole city roared salutes firecrackers and fireworks.  we went outside and burned 10 of bengal candles.  on the morning under the tree were gifts.  santa claus again outsmarted us and bring them when we were asleep.  but we were a younger brother tried so hard to watch for it! but my mother said that he and the magician, that no one appears, and all other clauses dressed.  then i asked my mother what she believes in what you do not see it.  she said that the air we also do not see, but it does not mean that it is not.  it is a pity after all that we have not seen this santa claus.  let's try another time.happy new year!

1. the boys are playing football now. they are tired. they have been playing football an hour and a half.

2) tom began talking on the phone an hour ago. i think he should finish. he has been talking on the phone for more than an hour already.

3) roy came to see  the dentist at nine o`clock. it is 9: 30 now.

roy has been waiting for the doctor since 9: 00 a.m.

4) colin became a professor in 1998. he has been working at the university since he became a professor.

5) the greens went to canada last summer. they are living in canada now. they have been living in canada for about a year.