Usted' can be shortened to 'Ud' and 'ustedes' can be shortened to 'Uds'. Irregular verbs in the present tense in Spanish Irregular verbs don’t follow the usual pattern in the present tense.

one sees/we see Practise what you've learned about irregular verbs in the present tense with this quiz. The verbs connaître (to know, be familiar with) and écrire (to write) should be learned in ...

Instead of opting for bland, unspecific expressions ("says," "writes about," "believes," "states") consider using more vivid or nuanced verbs such as "argues," "insists," "explains," "emphasizes," ...