18 Complete the questions with the correct comparative / superlative form of the words in brackets, and then choose the correct answer. (big) country in B Russia (close) 1 which is the world? A Canada 3 Which planet is to the Sun? A Mercury 3 When did hit Chile? A 1960 B Earth 5 What are becoming more and (popular) these days? A online games B comic books 6 Which is (high) mountain in Europe? A Mount Blanc B Mount Elbrus 7 What is one of (serious) problems we face today? A heavy traffic B climate change 8 in which cily do we find (tall) building ever made? A Dubai (strong) earthquake B 1990 (dangerous) 4 Which animalis than the elephant? A polar bear B lion B Taipes

1. Which is the (biggest) country in the world?
Answer: Russia

2. Which planet is (closest) to the Sun?
Answer: Mercury

3. When did (the earthquake) hit Chile?
Answer: 1960

4. What are becoming more and (more popular) these days?
Answer: Online games

5. Which is the (highest) mountain in Europe?
Answer: Mount Elbrus

6. What is one of (the most serious) problems we face today?
Answer: Climate change

7. In which city do we find (the tallest) building ever made?
Answer: Dubai

8. Which animal is (more dangerous) than the elephant?
Answer: Lion