What does Greg think it might be?

At first, he thought it was a weather balloon then he thought it must be a communications satellite.

Unit 4: I Wonder What Happened

1. Listen and Discuss

2. Match the sentences below with the pictures.

a. 5 There must have been a hurricane or a tornado.
b. 1 It can’t be a real locomotive. It must be an advertisement.
c. 3 He might have teased the bull.
d. 2 The driver must have lost control of the truck.
e. 7 It might be a new design of sunglasses.
f. 6 It must be the crater of a volcano, or maybe a meteorite could have fallen.
g. 4 It could be something from another planet.

Quick Check

B. Comprehension. Answer true or false.

1. T When the Faussetts got home, their roof had been smashed.
2. F The crash happened while they were asleep.
3. F The Faussetts’ neighbours said they hadn’t heard anything.
4. T The meteorite had left a lot of destruction in its path.
5. F The largest fragment wasn’t as heavy as a tennis ball.

3. Grammar

A. Complete the sentences using the verbs in parentheses. Use the simple past and the past perfect forms.

1. I felt (feel) much better after I had seen (see) the results of my test.
2. It had been raining, but by the time we arrived (arrive), the rain had stopped (stop).
3. Dinosaurs had seen (be) extinct for millions of years before the first humans appeared (appear).
4. I had never travelled (never, travel) outside my country until I went (go) to Disney World last summer.
5. We wanted to get a picture of the meteorite, but when we arrived (arrive), the police had already travelled (already, take) it away.
6. No, Your Honor, I had never seen (never, see) that man before the night he broke into (break into) my apartment.

B. Complete the sentences using can’t, must, or might.

1. You haven’t eaten all day. You must be starving.
2. Pat’s joking. She can't be serious.
3. Ahmed has been studying all afternoon. He must be tired by now.
4. I’m not sure of the way there. Let’s ask my father. He might drive us there.
5. I can’t find my keys anywhere. I must have lost them.
6. Who’s at the door? It can't be Mariam. She is abroad with her parents.

5. Listening

A. Listen to the two strange events, and complete the chart. Write the strange events in the What Happened? column.

8. Conversation

About the Conversation

1. What had happened before Greg got to the park?

A crowd had already gathered around a weird object.

2. What does Samir think the object could be?

He thought it could be a satellite.

3. What does Greg think it might be?

At first, he thought it was a weather balloon then he thought it must be a communications satellite.

9. Reading

After Reading

A. Match the words with the meanings.

1. b asset
2. f sustainable
3. c upgraded
4. d dynamic
5. i urban
6. a rural
7. h remote
8. g streamlined
9. e enterprise

11. Form, Meaning and Function

A. Complete the witness report with the correct form of the verb in the past. Compare with a partner.

• While I was walking (1. walk) to work, I heard (2. hear) a lot of people shouting and then I heard a very loud crash.
• Before I heard the crash, I had seen (3. see) lights above me and I had heard (4. hear) a humming sound.
• When I arrived (5. arrive) at the park, a really large crowd already gathered (6. gather) around something which had fallen (7. fell) out of the sky.
• People were (8. be) quite terrified because they never seen (9. see) anything like that before.
• Some people called (10. call) the police and some other people ran (11. run) away.
• Before I saw that the object was man-made, I had thought (12. think) the object was a UFO.
• When I saw that the object was made from metal, I realized (13. realize) that it was (14. be) probably part of a weather balloon or a satellite.

C. Complete the sentences. Use the simple present tense and will, may or might in the second clause.

1. When you heat (heat) water to 100 degrees Celsius, it boils (boil).
2. If they climb (climb) up to 4,000 meters, they will need (need) oxygen.
3. If you see (see) a “falling star,” it might be (be) a meteorite.
4. If we get (get) this HD television, we will see (see) the game better.
5. When you mix (mix) flour and water, you will end up (end up) with batter.