---Must I answer it in English?---No, you _______. You can use Chinese.

 --- I saw the Smiths at West Beijing Station this afternoon.--- You __________. They are still on holiday in Hawaii.

—Where___________I meet you tomorrow morning ?—I haven’t decided the place. But I’ll call you soon.

(2013·江西六所重点高中一模)We ________ take clean drinking water for granted. One day we may run out of it.

—The research on the new flu virus vaccine is challenging and demanding. Who do you think can do the job?—________ my students have a try?