Sometimes we have much homework to do, but not often. Anyway, it ______in time.

If prices rise too high, the government has to do something _________ it. 

--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?

I set up email addresses for connecting with my parents last May. But I didn’t write to them as often as I ______. 

 Thanks to his pension, Li Zhentian, _____ give each of his grandchildren RMB 5 as a Chinese New year gift for the first time.