1 Choose the correct alternative. +1 The noise of the campers disturbed/Was disturbing
the snake and he moved was moving away.
2 As I was turning/had been turning into the drive, I saw
a strange man by my door.
3 Apparently hunters had shot/shot over 300 cheetahs
last year.
4 I cut myself while I had been preparing/was preparing
the dinner.
5 As soon as I had finished/was finishing my exams,
threw all my books away!
6 We walked/were walking quietly through the forest
when the bird suddenly attacked/had attacked.
7 They were studying/had been studying for over four
hours so they were exhausted.
8 I didn't realise he had left/left his wallet at home.
9 I was angry that he made/had made such a mess!
10 I had been waiting/was waiting for ages so I decided
to leave.

1. The correct alternative is "disturbed" because it describes an action happening in the past. The noise of the campers caused the snake to move away.
2. The correct alternative is "as I was turning" because it describes an ongoing action happening in the past. While the speaker was turning into the drive, they saw a strange man by their door.
3. The correct alternative is "had shot" because it describes an action that happened before a specific time in the past (last year). The hunters shot over 300 cheetahs last year.
4. The correct alternative is "was preparing" because it describes an ongoing action happening in the past. While the speaker was preparing the dinner, they cut themselves.
5. The correct alternative is "had finished" because it describes an action that happened before another action in the past (throwing the books away). As soon as the speaker had finished their exams, they threw all their books away.
6. The correct alternatives are "were walking" and "suddenly attacked" because it describes an ongoing action happening in the past. The speaker and others were walking through the forest when the bird suddenly attacked.
7. The correct alternatives are "had been studying" and "they were exhausted" because they describe an action that started in the past and continued up to a certain point in the past (over four hours). They had been studying for over four hours, so they were exhausted.
8. The correct alternative is "had left" because it describes an action that happened before the speaker's realization. The speaker didn't realize that he had left his wallet at home.
9. The correct alternative is "had made" because it describes an action that happened before the speaker's feeling of anger. The speaker was angry because he had made such a mess.
10. The correct alternative is "had been waiting" because it describes an action that started in the past and continued up to a certain point in the past (for ages). The speaker had been waiting for ages, so they decided to leave.