above "正如上边所提到的"。

　　10．The season runs June through August, with additional ________(perform) in March and September.

　　答案：performances　形容词additional后应接名词，performance在本句中意为"表演"，是可数名词，由空后的介词短语可知表示多场表演，故填performances。

　　Ⅱ.单句改错

　　1．Perhaps you can help me pick up a pair of jeans now, since you are an expert.

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　　答案：up→out　pick out "挑选"。

　　2．She stood outside the station, looking at all directions, but apparently no one had come to meet her.

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　　答案：at→in　in all directions "朝/向四面八方"。

　　3．With the electricity being cut off, all the machines had to stop working.

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　　答案：去掉being　cut off与electricity存在逻辑上的动宾关系，应用过去分词短语作宾语补足语，表示动作已完成。

　　4．Occasions are quite rare that I have time to spend a day with my kids.

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　　答案：that→when　此处occasions意为"时机；时候"，在本句中为先行词，引导词在定语从句中作状语，表时间。故用when引导该定语从句。

　　5．Being too particular with what you wear is not a good habit.

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答案：with→about/over　be particular about/over "对......挑剔/讲究"。