“After World War II, many of the cities across western European countries ________,” our guide said.
Many citizens urged their government to take measures to _______ their carbon emission to reduce greenhouse effects.
Obama made _______ history by being elected as ________ first black president of the US.
--I think our school’s selective courses are of great use and I have learnt a lot from them. --Yes _______.
I was born in New Orleans, Louisiana, a city _______ name will create a picture of beautiful trees and green grass in our mind.
_______ he was the last man I wanted to see, I did all that I could to help him.