Certainly! To complete the crossword using the Past Simple tense in Russian, you need to conjugate the verbs provided in the crossword. The Past Simple form of regular verbs in Russian typically ends in -л, -ла, -ло, or -ли, depending on the gender and number of the subject.
Do you have the specific crossword with verbs that need to be conjugated, or do you need a general explanation of how to form the Past Simple tense in Russian?
