问题
选择题
---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
答案
答案：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。