1. He puts a collar around his dog before walking it.
2. He puts a collar on his dog before walking it.
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Are both OK? Do we have to use 'around' or 'on'? Can we use other verbs instead of 'puts'?
2. He puts a collar on his dog before walking it.
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Are both OK? Do we have to use 'around' or 'on'? Can we use other verbs instead of 'puts'?