Complete the sentences using phrases from 1.

Gap-fill exercise

Fill in all the gaps, then press "Check" to check your answers. Use the "Hint" button to get a free letter if an answer is giving you trouble. You can also click on the "[?]" button to get a clue. Note that you will lose points if you ask for hints or clues!
   bigger and bigger      have built      It's the first time      The more      the worse   
1. They several high-rise buildings opposite Nam's house.
2. The city where Nam lives is getting .
3. Mark has been on an electric bus.
4. crowded the area becomes, traffic jams get.