Answers

2016-02-25T23:51:51+08:00
I think it is wind because we absolutely cannot see nor touch it but we can hear it.
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2016-02-26T00:02:34+08:00
The answer isĀ OUR VOICE. It is actually obvious because it can also make most of the tones instruments make. The voice is an instrument we can't feel or see, but its an instrument we all can hear! ^-^

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