单选题
--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、
remains to be done
D、
is remained to be done
【正确答案】
C
【答案解析】
[考点] 不定式结构
[解析] much作为不可数名词的不定代词在句中作主语。remain是不及物动词后跟动词不定式to be done。只有C项符合题目语法要求。
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