Hi. Why does it have to be "in" rather than "on," if it is indeed so, in the following example sentence? Please see the underlined part. Thank you in advance for your help.
He has a mole in his skin.
Top answer
"in" sounds odd to me. g. "on his arm".
— GPY
"in" sounds odd to me.
g.
"on his arm".
"on his skin" seems slightly pointless, since where else would it be?
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