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　　8．A high­tech system to help find missing children was put into operation on Sunday as a result joint efforts by Chinese police and Internet companies.

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　　9．Researchers were brought up from all over China to develop the new system.

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　　10．However，those who think differently believe that the learning environment is important and that graduates from a leading university are more likely find good jobs.

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　　答案与解析

　　1．whichever→whatever　句意为：你的支持对我们的工作很重要。无论你做什么都有帮助。whatever helps是从句，作谓语动词do的宾语。whichever使用的前提条件是有选择的范围。故将whichever改为whatever。

2．doing→done　句意为：如果不采取措施，海洋的鱼类资源将面临枯竭。If引导的条件状语从句用一般现在时表示将来，nothing