It was the hurricane ______ was called Katrina ______ destroyed the city of New Orleans.
In the USA, the students who study business is more than _______ those who study agriculture.
—— Ann is in hospital. ____ Oh ,really? I ______ know. I ______ go and visit her.
Mr. Brown, ______ chairman of the trade union, will visit our factory in _____ month of May.
Bamboo grows best in the place _____ it is warm and rains often.
We’re going to visit so many ______ places and do lots of _______ things .