пусть расстояние от зареченска до азс х км, тогда расстояние от азс до ивантеевки 7х км. составим уравнение: х + 7х = 800
8х = 800
х = 100
от зареченска до азс 100 км пути. т.к. расход бензина на 100 км составляет 9 л, а бензина имеется 10 л, следовательно машина доедет до азс и еще 1 л бензина останется.
ответ:Nina has been learning/has learned English for 2 years.
The birds have already flown/have been flying to the South.
They have known /have been knowing him for many years.
Mike has forgotten/has been forgetting to learn the poem.
The children have been watching/have watched cartoons for 2 hours.
The train has just come/has been coming.
We haven’t been having/ haven’t had a holiday for 5 years.
She has been teaching/has taught at this school for twenty years.
David has been painting/has painted in his studio since 10 o’clock.
Mary and Sam have collected/ have been collecting stamps for 3 years.
Their parents have been/have being friends since their childhood.
Dave has been/ has been being a student for 2 years.
John sees that the city centre has been turned into a real shopping area.
John sees that a theatre has been opened.
John sees that the names of some streets have been changed.
John sees that the city open market has been closed.
John sees that many trees have been planted.