Complete the text. Use past simple or past perfect.

Yesterday I (meet) (1) Betty at the bus stop. I (can) (2) hardly believe my eyes. Betty (change) (3) a lot. She (lose) (4) weidht. She (become) (5) very slim. In fact, she (look) (6) young and beautiful. Betty (have) two tickets for the theatre perfomance which she (8) (buy) for her mother and herself. As her mother (9) (be) ill, Betty (10) (invite) me to go with her which i (11) (do) with pleasure.