1. How did you use to go to school when you were small

2.Racing drivers drive more skillfully than normal motorists

3. Villages are less densely populated than cities

4. It is very exciting to fly a kite in the countryside

5. My opinion is it is better to preserve our traditions and customs

6. My brother is addicted to making models after school

1. Only then did I understand the problem

2. Only by hard work will we be able to accomplish this great task

3. Only later did I post it

4. Only at midnight did he come home 

5. Such an angry doctor as he was that none of the nurses dared to utter

6. Only if you tell me the truth can I forgive you