Question

9. The Burj Khalifa is the tallest building in the world
10. I was doubtful whether he would come.​

Answer 1

Answer:

9 ) true

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Answer 2

At over 828 metres (2,716.5 feet) and more than 160 stories, Burj Khalifa holds the following records:

• Tallest building in the world.
• Tallest free-standing structure in the world.
• Highest number of stories in the world.
• Highest occupied floor in the world
• Highest outdoor observation deck in the world.