Помогите пожалуйста решить задачу. Поезд вышел с вокзала 17 марта в 21.45 и прибыл в пункт назначения 19 марта в 4 ч утра. Сколько времени поезд был в пути?

помогите Пожалуйста!

A, an or the?

 1. Yesterday, I met........ interesting boy.  ....... boy han  ......  parrot on his shoulder.   ..... parrot was singing ....song.    .......song was in French.

2. My brother found .... wallet in the street  but no name. Then he saw...... policeman and gave ..... wallet tj him.    ........policeman thanked him and promised to give him.....reward.

3.Our neighbour Tom is ... very active person. In ....... morning he jogs for .....hour and in ... evening he works out his garden. At.......weekend he plays football with us. You'd never say he's 75.

4. Grandma has had .... cold for two weeks now. It think she should go to..... doctor's.

5. We went to..... cinema last night and saw..... exciting film.    ...... number of famous actors were in it. Actually, I think it's ...... best film l've seen in years.

6. ........ most important thing for my parents is how I'm doing at school. "How was school today?" is ....... first questinon they ask me when I come home.

На одном  из двух участков приема хлопка было 120тонн ,а на другом 180тонн .Ежедневно с первого участка вывозили 5 тонн ,а со второго 10тонн хлопка .Сколько дней количество хлопка на втором участке будет больше количества хлопка на первом участке?

Альфа - распад берклияА=247,Z=97(Bk)

Расположите в генетический ряд вещества 1. пропаналь 2. пропан 3. пропанол 4. 1-хлорпропан 5. пропановая кислота