264. The invention of the coal-burning_______engine revolutionized industrial production in the 18th century and opened the way to the development of mechanized transport by rail and sea.
The government is considering the environment-friendly plan which some scientists would like to see________soon.
________late, but also he forgot his books.
We'd like to do something for you________what you've done for us.
8. ---Why don't we choose that road to save time? ---The bridge to it
7. I asked him ________ English was his favourite subject.