根据汉语提示完成句子。 1. Today is his ______ (第二十个) birthday. He asks us to come to his birthday party. 2. Do you want some ______ (蔬菜) soup? 3. If you want to be ______ (健康), you should eat more green vegetables. 4. Please help me buy some ______ (西红柿), Lily. 5. ______ (多少) salad do you want?