题目内容：
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
参考答案：
选择题：161. Why does he look sad? 为什么他看起来不高兴呢？ There are
- 题目分类：东华大学大学英语4
- 题目类型：选择题
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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