You           be hungry after the long walk．Help yourself to some cakes．

--- Alice looks sad. Did you tell her about her brother’s accident?--- Sorry, I ________ her just before her final exams.

—Did you visit the museum last week? —No, we _____, but we spent too much time shopping.

----Where is my watch? I _______ find it. ----Don’t worry. It must be somewhere in your room. 

--- 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?