We present the results of SAO RAS 6-m BTA spectral observations of GRBs and XRFs with the
signs of SNe: GRB/XRF 060218 (SN 2006aj) and XRF 080109 (SN 2008D). The properties of
these events are similar to those of usual core-collapse SNe without GRBs. Some spectral
features in the cases of SN 2006aj and SN 2008D may be interpreted as hydrogen and helium
traces. This supports an idea of presence of a relic envelope around the progenitor star
and the shock break-out effects observed in X-rays, UV and optics.