Answer the questions and fill the gaps.
1. That --- the main reason why people come to live in cities? a) is bjare c) am
2. Why ... a cin grow ?
a) is
b)do
c) does
3. What ... there in every major city ?
b) do
c) am
4. Where ... many people
who work in the centre live? a) is bido
c does
5. What ... the future of big cities?
a is bam
c) does
7. ... they continue to get bigger and bigger?
a) is b) will c) does​