John received an invitation to dinner, and with his work __________________.he gladly accepted it .

Auckland is a most exciting city with people of many different cultures ______ there . 

To Daniel’s parents’ surprise, the living room was clean and tidy, with the window ______and fresh air ______in.

With trees and grass_____ about 35％ of the urban area，the city of Hefei has taken on a new look.

. With two months _______,we'll have to say good-bye for our school life will be ending.