Откройте скобки используя глаголы Past Continuous or Past Indefinite.
Last night a friend of mine (to celebrate) his birthday. When I (to arrive), I (to see) that his flat (to be) full of guests (полна гостей) I (to enter) the sitting-room (гостиная). Some people (to dance). Several guests (to sing) a merry song and the host (хозяин дома) (to play) the piano. A group of girls (to listen) to music and other people (to watch) television. My friend (to introduce) me to his guests. When the hostess (хозяйка дома) (to invite)A everybody to the table. There (to be) many delicious (вкусные) things to eat and good wines to drink. The guests (to enjoy) the feast (пировали) when I left. I had to leave because I not (to feel) well.