Many of the consonant alternations that regularly take place in the 1st Singular of 2nd conjugation verbs (e.g. вќдеть - вќжу) are identical to the alternations that take place in English. For example, stem final т changes to ч (e.g., отвљтят отвљчу), which is exactly what happens to the sound /t/ in English before -u- (create /t/ creature /ch/).
English spelling does not normally reflect these alternations, though sometimes you will find don't you spelled don'tcha. Here are the Russian alternations with both Russian and English examples:
  Key form   1st Sg.   Comparable English alternations
т ч отвљтят отвљчу 'answer' create - creature
д ж вќдят вќжу 'see' collide - collision
з ж отвћзят отвожџ 'take, lead' please - pleasure
с ш спрћсят спрошџ 'ask' face - facial
ст щ простїт прощџ 'forgive' quest - question
In addition to the above set, stem-final labial consonants add -л- before the 1st Singular ending:
  Key form   1st Sg.  
п пл кџпят куплє 'buy'
м мл кћрмят кормлє 'feed'
б бл лєбят люблє 'like'
в вл стђвят стђвлю 'put'