根据汉语意思完成下列句子。 1. 他参加了昨天的歌唱比赛并获得了一等奖。 He _______ _______ in yesterday's singing competition and won the first prize. 2. 学好英语是有必要的。 _______ _______ to learn English well. 3. 这个男孩年龄太小了不能自己穿衣服。 The boy is _______ young _______ dress himself. 4. 汤姆和他哥哥一样擅长数学。 Tom is as _______ _______ math as his brother. 5. 凯特每天睡觉超出十小时。 Kate sleeps _______ _______ ten hours every day.