Ответьте, используя Past Perfect Continuous.

HOW LOHG HAD

1 … it been snowing when you left the old house? (for 4 hours)

2 … Eton been working before he retired? (for 20 years)

3 … Mike been living there when Janet moved in? (for a fortnight)

4 … they been studying German before they finaly went to Berlin? (for 5 years)

5 …the authors been working on the novel before they sent it to a publisher? (for 2 years).

6 … Pele been playing football before he took part in that championship? (for 6 years)

7 … the students been listening attentively to the dialog before they could understand the basic meaning? (for an hour)

8 … the children been walking before the granny called them? (for 2 hours)

It had been snowing for 4 hoursEton had been working for 20 years before he retired Mike had been living there for a tonightThey had been studying German for 5 years before they went to Berlin The authors had been working on the novel for 2 years before the sent it to a publisherPele had been playing football for 6 years before...The students had been listening attentively to the dialog for an hour ...The children had been walking for 2 hours..(вместо точек просто продолжение предложения без изменений)