do you go to school, on foot or by bus?
---________ 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)
---He has never spoken to a foreigner. ---________.
--I don’t know if his uncle ________.--- I think he ________ if it doesn’t rain .