we looked for the m( )boy ,but we couldn't find him

the boy looked for his toy everywhere,but he couldn't find i they_____ (looked for carefully) for hours but couldn't find But we couldn't find them all We looked for the boy here and there,and f____we found him i The boy tried _(hide) himself but we _(find) him at last. We looked for them,but we could not find them all.为什么用find? Granny looked for her book, but she couldn’t find it _____. Granny looked for her book,but she couldn't find it anywhere I've looked for my pen everywhere,but I find it.A．couldn't B I looked for my pen ,but I couldn’t find it __(somewhere) We looked everywhere for the keys,but they are nowhere ( ). We ____ for him,but haven't found him.