S___ is a big city in Australia.

Population is a big s___ problem. Beijing is a big city?China A.in B.to Is Sydney a city of Australia? Mr.Smith is a __of Australia.(city) There is a big lake in our city改为疑问句 Toronto is a big city in canada.(中文意思) In our city,there is a big zoo In our city,there is a big ________(购物) center. Is there a big supermarket in your city? in a big city like biejing,transportation is ver ______ is a big city in the United States. Live in a big city