Đánh dấu () trước những câu ở dạng bị động

Bài 1: Đánh dấu () trước những câu ở dạng bị động
 
    My mother bought me this dress yesterday       
    This letter was written by my secretary.       
    He had a serious accident yesterday.       
    I was allowed to go picnic with friends       
    I didn’t expect Jim to come.       
    I was born in Russia.       
    I bought this book in the local bookstore yesterday.
       
    All the wine was drunk by Peter last night.       
    The songs were sung by many famous singers.       
    This cup is made from clay.       
    The vase broke into pieces.       
    My father and my mother are employed by the same company.       
    My parents took me and my sister to the theater.       
    This actor is admired by many people.       
    Jim wasn’t expected to fail the test.