—You’ve made great progress in your English study haven’t you?—Yes but much .A. remains

问题补充：

—You’ve made great progress in your English study, haven’t you?

—Yes, but much .

A. remains to do

B. is remained to do

C. remains to be done

D. is remained to be done

答案：

A. remains to do

B. is remained to do

(答案→)C. remains to be done

D. is remained to be done

解析：考查非谓语动词。句意“你的英语学习已经有了很大的进步，不是吗？”“是的，但是还有很多事情要做。”remain to be done是固定句型，意为“......有待被做”。much和do是动宾关系，应该用被动形式。故选C。