_______ do you help the old man with the housework?-Once a week. [ ]

When did you buy this computer? It looks so new.— I it for only a couple of days. My sister bought it for me as a birthday present.

I need 50 yuan to ___ for winter camp. I have to ask my father for some money.

If he ______ at home, he ______ sorry.[ ]

I have _______ food at home.