题目

请根据句意从方框中选择合适的单词，并用其适当形式填空，使句子通顺。 human   true   value  appear    they   28．Lucy said that Mr. White offered her some _________ suggestions. 29．Those volunteers always think more of others than of _________  . 30．Mr Yang, I fell ill last night and didn’t finish my homework. I’m ________ sorry about it. 31． —Why do the beautiful birds ________ so fast? —Because of lack of food. 32．It’s known to us all that ________ need food, water and air to survive.鸟类的气囊是呼吸器官，也是交换气体的器官．______．（判断正误）