You _____ hurt your stomach if drinking beer while having sea food.

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

Mary _______ be in the hospital. I saw her play basketball a minute ago.

—Do you know whose dictionary it is?—It ________ be Ann’s. Look! Her name is on the first page.

– When can I get the ticket for the opening ceremony? -- Don’t worry. You ____ get one this very afternoon.