题目内容
--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
C
解析:
remain作系动词用,本身不用于被动语态,有时与不定式的被动结构构成合成谓语,意为"尚待"。
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