写出下列动词的第三人称单数形式、过去式形式
　　go _______ _______ enjoy _______ _______
　　buy _______ _______ eat _______ _______
　　get _______ _______ walk _______ _______
　　take _______ _______ dance _______ _______
　　write _______ _______ run _______ _______
　　swim _______ _______ find _______ _______
　　begin _______ _______ eat _______ _______
　　play _______ _______ study _______ _______