第25题: [单项选择]All ______ is a continuous supply of the basic necessities of life. A. what is needed B. the time needed C. for our needs D. that is needed 参考答案:D 答案解析:空当后出现的谓语动词和空当前的all组成一完整的主谓结构;据此推断:空当处为一定语或定语从句。what不可引导定语从句,A即可排除。B和C语义不通,也可排除。因此, D为正确选择。that引导定语从句