Use of English PRO

When we think (0) ABOUT how the world has changed (1) ............ our great-grandparents' time, it's important to take (2) ............ account how the world of transportation has changed . Of course, people complain (3) ............ traffic nowadays, but even in the past people used to think that the roads were dangerous. When cars were a new invention, a man would walk in front of them with a red flag, warning everybody else. Now, of course, we have (4) ............ used to them. Another thing that we don't find strange anymore is the variety of products we have in our shops. When we go to our local supermarket, we can find tea (5) ............ China , bananas from South America and radios from Japan. All these products (6) ............ to be transported. (7) ............ day, goods are moved from one part of the world to (8) ............ by all kinds of means of transport.