根据上下文理解，选择所给词的适当形式填空。 minute,  walk,  look,  girl,  cook,  class,  happy,  feel,  key , need Yesterday was Sunday. We had no 1 . I wrote a letter to my pen pal and 2 lunch for my parents. After lunch I took a 3 with Mike through the park behind my house. We saw a little girl 4 for something. She lost her keys. “She 5 help,” Mike said. So we helped the girl look for her 6 . About ten 7 later, Mike found them in the grass. The girl was 8 . We spent much time in looking for the 9 keys, but we 10 very happy because we did a good deed（做好事）.