161. Why does he look sad? 为什么他看起来不高兴呢？ There are so many problems ________. 还有很多剩下的问题没有解决。 A. remaining to settle B. remained settling C. remaining to be settled D. remained to be settled

161. Why does he look sad? 为什么他看起来不高兴呢？
There are so many problems ________. 还有很多剩下的问题没有解决。
A. remaining to settle B. remained settling
C. remaining to be settled D. remained to be settled

出自：东华大学大学英语4

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