please tell me the answer of this cloze test It has been argued by some that gifted children should be grouped in special classes, The 1 has been on the belief that in regular classes these children are held back in their intellectual (智力的) growth by 2 situation that has designed for the 3 children. 1. A. principle B. theory C. arguments D. classification 2. A. designing B. grouping C. learning D. living 3. A. smart B. curious C. mature D. average 1, theory and argument ,which is better?