  We prove two single-parameter q-supercongruences which were recently
conjectured by Guo, and establish their further extensions with one more
parameter. Crucial ingredients in the proof are the terminating form of
q-binomial theorem and a Karlsson-Minton type summation formula due to Gasper.
Incidentally, an assertion of Wang, Li and Tang is also verified by
establishing its q-analogue.
