Within a few years China ____ well have the most advanced railway industry in the world.

－Would you like something to drink?－No, thanks. I __________ a glass of water just now. 

—Must I finish the work today, mom ?—No, you ______.You can finish it tomorrow.

-- Mum，can I go on a holiday with my classmates this summer vacation?-- OK．You __________ have a chance if you get along well with your studies．

When I was a child, I ______ watch TV whenever I wanted to.