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Tom splnil, čo sme si mysleli, že nedokáže splniť.
Tom accomplished what we thought he wouldn't be able to accomplish.
Nesľubuj, čo nemôžeš splniť.
Don't make promises that you can't keep.
Splníš svoj sľub?
Will you keep your promise?
Splníte svoj sľub?
Will you keep your promise?
Examples from Tatoeba (CC BY 2.0 FR).
Source
Slovak National Corpus (SNK) ↗English gloss from the frequency publish path. Example sentences from Tatoeba (CC BY 2.0 FR).
Full attribution on References.