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We (A1) ... along this mountain road, miles from anywhere, when we (A2) ... across a trail of tins of food and bottles of water along the road. I looked out of the car window and noticed this camper van about ten metres below us in a field, with its back door hanging off. It (A3)... off the road. We stopped the car. A young man (A4) ... back up towards the road. He (A5) ... in blood, so we offered to take him to hospital. As we drove off, with him lying on the back seat, he (A6) ... asking about his girlfriend — was she all right? When we (A7) ... the hospital we found that she (А8) ... up and taken to casualty by someone else. Luckily, she was okay — and so was he, eventually.
А1.

1) were driving

2) have been driven

3) had driven

4) have driven

А2.

1) had come

2) were coming

3) came

4) have come

А3.

1) had obviously swerved (съехать)

2) was obviously swerving (съехать)

3) has obviously been swerved (съехать)

4) obviously swerved (съехать)

А4.

1) has climbed

2) was climbing

3) had been climbed

4) climbed

А5.

1) had been covered

2) was covering

3) covered

4) was covered

А6.

1) starts

2) had been started

3) was started

4) started

А7.

1) reached

2) have reached

3) had been reaching

4) reach

А8.

1) was picking

2) has been picking

3) had been picked

4) would be picked

А1.1) were drivingА2.3) cameА3.1) had obviously swervedА4.2) was climbingА5.4) was coveredA6.4) startedА7.2) have reachedА8.3) had been picked