用所给词的适当形式填空。

l. After a _____ (quickly) breakfast, he goes to school.

2. It took _____ (our) half an hour to get to the mountain.

3. Could you tell me some ways of _____ (learn) oral English?

4. He is new here. He needs _____ (buy) a map of the city.

5. How many _____ (minute) are there in an hour?

6. What about _____ (ride) a bike to the park?

7. He _____ (walk) home every day.