Past Perfect или Past Perfect Continuous
01. I had to have a break. I [had been driving/had driven] for too long.
02. Before we parked our car we [had spent/had been spending] about 30 minutes to find a free spot.
03. I arrived on Sunday. I [hadn't been/hadn't been being] at home for two days.
04. The roads were blocked in the morning. It [had been snowing/had snowed] all night.
05. They got to the beach after they [had been walking/had walked] for hours.
06. She called the police when she [had seen/had been seing] the light in the hall.
07. His English was perfect. He [had been studying/had studied] it since he started school.
08. I was really hungry. I [hadn't eaten/hadn't been eating] anything since the morning.
09. She didn't go to work because she [had broken/had been breaking] her leg.
10. As soon as Betty [had opened/had been opening] the door, the burglar alarm went off.