Investigation of charge-exchange resonances is important for calculating neutrino capturing cross-sections σ(E) of nuclei that can be used in neutrino detectors. Analog resonance, Gamow- Teller resonance (GTR) and three pigmy resonances are selected. Calculations were performed using the self-consistent theory of finite Fermi systems for Ga-71, Mo-98 and I-127. Even not accounting GTR gives a decrease of the σ(E) value more than 25%. Numbers of events in the interaction of solar neutrinos with these three nuclei calculated. It is shown that boron neutrinos make the main contribution and it is important to take into account all resonances.