Tom said he had never been there, but he was .
Tom has been here ________just one year, but his father has worked here________ ten years ago.
--- Our country ______ a lot so far .--- Yes. I hope it will be even ______ .
--- Which city has ________ population, Shanghai, Hong Kong or Qingdao?--- Shanghai, of course.
--- you your homework yet?--- Yes. I it a moment ago.
--- Could you go to the park with me this afternoon?--- Sorry, I _______ there. I went there yesterday.