----Are Mr. and Mrs. Wang living alone in the house? ----Yes, altough they have three sons,      of them live with their parents.

______ is impossible if you put your heart into it. 

I have a dog. _____ name is Wangwang.

— ______ did you spend your summer vacation last year?— In England. 

----Which of the two subjects do you like, art or music?----______.They are really interesting.