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hearing aid
Note
Structure of Human Ear and Hearing Aid
A hearing aid is a battery-operated, an electronic device that receives sound from the atmosphere and converts it into electrical signals. Humans
Note
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28 Nov 2019
Forms of Verbs as Part of Speech
Forms of Verbs as Part of Speech, Auxiliary
Verb:
They are also called as helping verbs, auxiliary verbs are used to complete the
meaning of othe
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