瘋狂英語演講真功夫卡
禮儀演講（二）
1 . The air had a delicious smell.空氣裡有一股香味。
2 . The increase in sales is being maintained.銷售額持續增長。
3 . I wrote several letters on my mother's behalf.我代表我母親寫了幾封信。
4 . The soup is delicious.這湯很鮮美。
5 . Food is necessary to maintain life.食物是維持生命所必需的。
6 . He thanked them on your behalf.他替你同他們致謝。