I'm afraid I'll have to work extra hours for there're still many problems remainingto be solved．题目和参考答案——青夏教育精英家教网——

题目内容

5．I'm afraid I'll have to work extra hours for there're still many problems remainingto be solved（solve）．

分析恐怕我还要再工作几个小时，因为仍然还有许多问题有待解决．

解答答案：to be solved．
根据前面的句子I'll have to work extra hours可知，应该是还有工作没完成，所以使用remain to be done有待于被做，表示还有问题要解决；故答案为to be solved．

点评做完成句子的题时，首先应通过分析句子的结构，判断出空缺处在句中所作的成分及其相应的形式；其次还应考虑到动词的时态，语态以及主谓一致等．

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