A teacher showed students an example and explained the usage of past perfect ten

A teacher showed students an example and explained the usage of past perfect tense,and ask students

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In the speaking activities,a speaker often tries to avoid using a difficult word

In the speaking activities,a speaker often tries to avoid using a difficult word or structure and ch

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window, he is performing ______.

window, he is performing ______.

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I bought some roses______ I bought some flowers.

I bought some roses______ I bought some flowers.

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小学生在游戏过程中跌倒,膝盖擦伤并有少量的出血点,教师应采取的正确处理方法是( )。

小学生在游戏过程中跌倒,膝盖擦伤并有少量的出血点,教师应采取的正确处理方法是( )。

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