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<> Design fora
floating city

2 CHECK. Match the problems on the left with the possible solutions on the right.

1. overpopulated cities _A a. vertical farms

2. the loss of some energy sources , b. floating cities

3. the loss of homes c. clean cars

4. polluted air

5. not enough food

DISCOVER. Complete the exercises to learn about the grammar in this lesson.
A _ Find these sentences in the article in exercise 1. Write the missing words.

1. In the future, people around the world big challenges.
will be facing
2. By 2045, the global population nine billion.

3. Most people in cities.

4. Many coastal people their homes due to rising sea levels.

B_ Write the words from exercise A next to the correct pattern.

1. will be + verb + -ing: will be facing

2. will have + past participle:

C¢ Which pattern from exercise B expresses each idea below? Write the number on the line.

1. This verb form expresses something that will be in progress at a future time.

2. This verb form expresses something that happened before a time in the future.

LESSON3
79
UNIT3
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