---You’ve made great progress in your studies of English, haven’t you?
--- Yes, but much________.
A. remains to do B. is remained to do
C. is remained to be done D. remains to be done
---You’ve made great progress in your studies of English, haven’t you?
--- Yes, but much________.
A. remains to do B. is remained to do
C. is remained to be done D. remains to be done
D