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,不用于被动语态,有时可以接不定式的被动语态,意为“尚待”。如:“A number of problems remain to be solved.”许多问题尚待解决。
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