按要求变换句型。
1. The boy eats junk food three times a week.  (就划线部分提问) 
    _______ _______ does the boy eat junk food?
2. Mike always watches TV on school night.    (变为否定句) 
    Mike _______ _______ TV on school night.
3. The students are playing soccer in the park. (就划线部分提问)
    What _______ the students _______ in the park?
4. John did his homework last night.  (变为否定句)
    John _______ _______ his homework last night.
5. There's some milk in the glass.  (变为一般凝问句)
    _______ there _______ milk in the glass?

—______ does he exercise?
—Once a week.

—_      will Mr. Smith         Shanghai?
—In a week. He will have a meeting in Shanghai.

—How _____ glasses of water do you drink every day?  
—Three.

—_____ is it from here to the Town Cinema?
—About five kilometers.

—____ yogurt do we need to make fruit salad?
—A cup.

—_____ are you?
—I'm twenty.

 _____ cups of coffee do we need?

—______ are you staying there?
—For about 3 days. I don’t like to be away for too long.

______ do you go to bed in the evening?