Put the verbs in brackets in to present simple, past simple, present continuous, past continuous. first sentence is done for you. 1 aiman is a shop assistant. she usually (work) at night. 2 “what is that noise? ” aidar ) his car at the moment. 3“ (be) you busy? ” “no, i am not.” 4my sister (enter) to the university when she was 17. 5. they (sing) while we ) some music