Who listens ______ , Tom, Jack or Bill?
---________ do you improve your English ? ---I improve it ________ practicing it more often.
--- Could you tell me ________? ---We lost the game, but we are still able to go to Australia.
There is going to ________ a sports meeting next week. If it ________, we’ll have to cancel(取消)it.
---He has never spoken to a foreigner. ---________.
---I don’t know if his uncle ________. --- I think he ________ if it doesn’t rain .