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 hours
Eton had been working for 20 years before he retired
Mike had been living there for a tonight
They 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 publisher
Pele 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)