I know this plan is far from perfect, but I just can’t think of _______one.

---I eat _____ vegetables and ______ meat than I did last year.  ----That's why you're getting fatter. 

— Are you pleased with the result of the football match?— Sure. We have never had a            one.

—Which month has ______ days in a year?  —February.

Of the two T-shirts，I’d choose the___one to save some money for a book．