Question

---You have 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

Answer 1

C

考查remain的用法。remain是不及物动词，故排除B、D,根据意思，很多事情有待于被解决，故选C。