进行时，无被动语态，句中已有谓语动词is，且building和date back to存在逻辑上的主谓关系，故应填现在分词dating作后置定语。

　　8．I am fed up ________this weather; it's time we had some

　　sunshine.

　　答案：with　be fed up with "受够了；厌烦......"。

　　9．Sometimes we went ahead and did it, regardless ________the

　　consequences.

　　答案：of　regardless of "不管；不顾"。

　　10．While working out the problem, you should pay more attention to the ________(accurate)．

　　答案：accuracy　由空格前的冠词the可知，此处填名词形式。

　　Ⅱ.单句改错

　　1．Assumed that the weather is favorable, farmers will have a good harvest.

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　　答案：Assumed→Assuming　Assuming that ... "假定/假

　　设......"，常位于句首作状语。

　　2．He could have finished it on schedule, but anyhow he fell behind.

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　　答案：anyhow→somehow　somehow "不知怎么地；以某种方式"。anyhow＝anyway "尽管如此"。

　　3．I'm very sorry to interrupt with you, but I have something important to tell you.

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　　答案：去掉with　interrupt为及物动词，interrupt sb./sth. "打断某人/某事"。

　　4．We had been waiting for you for an hour; we don't want to wait any longer.

　　__________________________________________________

答案：had→have　由语境可知，"等待"这个动作应是持续