how
- ______ will you stay there? — For about a month. [ ]
- ______ do you surf the Internet? — Twice a week. [ ]
- ________ will your father be back?—In two months. [ ]
- ______ has this food store been here?-Since 2001.[ ]
- ________ do you clean your kitchen?- Twice a week.[ ]
- ____ do you have a computer class? —Twice a week. [ ]
- _____did the space flight last? —Twenty-one hours.[ ]
- ____ yogurt do we need to make fruit salad?—A cup.[ ]
- How _______ did you do a bird count there?—Twice. [ ]
- _____ do you practice _____ tennis? —Twice a week.[ ]