1. I wasn't listening when you gave the presentation.
2. The young teenager was surfing when a shark attacked her.
3. Where were you going at 7.30 last night?
4. People appreciated what we were suffering at that time.
5. While the workers were saving others, they also had to consider their own lives.
6. You didn't know what was happening with us this time last week.
7. As Jimmy was sleeping in his tent at the base camp, a loud bang woke him up.
8. What were they doing when the fire broke out?
9. While we were helping the victims, the ground started to tremble again.
10. The children were making a snowman while it was snowing outside.

1. Anna called for Simpson, but he heard nothing.
2. When we arrived at the forest, it was getting dark.
3. As we were cleaning up the lawn, I suddenly heard a little yelp.
4. Sarah was lying in her bed listening to music when the bell rang.
5. She went to check who it was, but there was no one.
6. Some kids were playing in the streets making noise at that time.
7. She closed the door behind her and went back to her room.
8. What were they doing at 9 pm last night? It was really noisy.
9. As they were going down a mountain ridge, a landslide happened.
10. The accident occurred while they were climbing up the mountain.

1. He was sitting on an airplane when he saw a fire from the window.

   • Correct answer: A. was sitting - saw

2. While the other passengers ran to the exits, Brian was climbing out of the window.

   • Correct answer: B. ran - was climbing

3. When it started raining, we found a nice hotel down the road.

   • Correct answer: C. started - found

4. They were getting close to the bottom of the mountain when Simpson suddenly slipped.

   • Correct answer: D. got - slipped

5. While Steven and Rachel were sailing around the Canary Islands, their boat sank.

   • Correct answer: A. were sailing - sank

6. The sun was shining when Hamilton arrived at the beach in Da Nang on a beautiful morning.

   • Correct answer: B. was shining - arrived

I. Supply the correct form of the verbs in the past continuous:

1. I was not listening when you gave the presentation.
2. The young teenager was surfing when a shark attacked her.
3. Where were you going at 7.30 last night?
4. People appreciated what we were suffering at that time.
5. While the workers were saving others, they also had to consider their own lives.
6. You didn’t know what was happening with us this time last week.
7. As Jimmy was sleeping in his tent at the base camp, a loud bang woke him up.
8. What were they doing when the fire broke out?
9. While we were helping the victims, the ground started to tremble again.
10. The children were making a snowman while it was snowing outside.

II. Supply the correct form of the verbs in the past continuous or simple past:

1. Anna called for Simpson but he heard nothing.
2. When we arrived at the forest, it was getting dark.
3. As we were cleaning up the lawn, I suddenly heard a little yelp.
4. Sarah was lying in her bed listening to music when the bell rang.
5. She went to check who it was, but there was no one.
6. Some kids were playing in the streets making noise at the time.
7. She closed the door behind her and went back to her room.
8. What were they doing at 9pm last night? It was really noisy.
9. As they were going down a mountain ridge, a landslide happened.
10. The accident occurred while they were climbing up the mountain.

III. Choose the best answer to complete the sentences:

1. He was sitting on an airplane when he saw a fire from the window.

   • A. was sitting - saw

2. While the other passengers were running to the exits, Brian was climbing out of the window.

   • D. were running - climbed

3. When it started raining, we found a nice hotel down the road to the town.

   • C. started - found

4. They were getting close to the bottom of the mountain when Simpson suddenly slipped.

   • C. were getting - slipped

5. While Steven and Rachel were sailing around the Canary Islands, their boat sank.

   • A. were sailing - sank

6. The sun was shining when Hamilton arrived at the beach in Da Nang on a beautiful morning.

   • C. was shining - arrived