Exercise 1. в каждой паре предложений поставьте глагол в одной из форм: past perfect или past perfect continuous. 1.to listen my head hurt because i to music for three hours. – i knew the names of the robbers because i to the news on tv. 2.to build they a new school for six months when there was an earthquake. – they a new block of flats by december. 3.to fly by the time the sun went down the couple over the pacific ocean for five hours. – by the time the sun went down the couple more than 500 km over the pacific ocean.

My head hurt because I had been listening to music for three hours. – I knew the names of the robbers because I had listened to the news on TV. 
They had been building a new school for six months when there was an earthquake. – They had built a new block of flats by December. 
By the time the sun went down the couple had been flying over the Pacific ocean for five hours. – By the time the sun went down the couple had flown more than 500 km over the Pacific ocean.