Indentify the one underlined word or phrase that must be changed in order for the sentence to be correct.

More as

one million of

the students

in the

public schools'

special education programs have a speech or language

impairment

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________ at this time yesterday?

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At 10 p.m two days ago, my friends ______ a birthday party for me.

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After a summer do volunteering in a mountainous area, I _____ many practical skills such as surviving, first aid and teamwork.

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While he ____ in the forest, he _____ a woodcutter.

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We can help disadvantaged people by _____ clothes and food for them.

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At this time last night, we ______ cards.

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At 10p.m yesterday, I _____book while my sister ______ a picture.