IV. Find and correct the mistake in each sentence.
​1.​It’s difficult to keep with the rapid pace of change in big cities.
​​ A ​ B​ C​ D
​2.​Our city has some luxury shop, but they are not very affordable.​​
​​ A​ B​ C​ D
​3.​City authorities are spending more and more money on public transport
​​​ A B
to make it well.
C ​ D
​4.​Big shopping malls are believed to be a feature for big cities.​​
​​ A ​ B ​ C ​ D
​5.​Remember to find out how much people are coming to the party tonight.​​​​A​ B​ C​ D