The mother sent her son (whom?) to a grocery and provision shop (where...to?) / for a doctor (for ...whom?).
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По запросу «to send smb. to smth. / for smb.» — результатов: 1: на: Немецкий
По запросу «to send smb. to smth. / for smb.» — результатов: 1: на: Немецкий
The mother sent her son (whom?) to a grocery and provision shop (where...to?) / for a doctor (for ...whom?).