Mum, would you please buy me an MP5 player? — If you can help do some housework the whole vacation, you ____ have one as a reward.

I phoned you at 5:00 yesterday afternoon, but nobody answered me.-Sorry. I ______ the flowers in the garden at that time.

Mum, I’m afraid I can’t _____ them in the match.

Let’s ________ for a walk, shall we?

Although our teacher is strictus, we like her. [ ]