Bài 1. Viết lại câu từ chủ động sang bị động 1.   They started a dancing class last week …………………………………………… 2.   Mr.Smith saw the accident …………………………………………… 3.   Somebody has taken my briefcase …………………………………………… 4.   The teacher returned our written work to us …………………………………………… 5.   She has finished the report by noon …………………………………………… 6.   The mad dog bit the little boy …………………………………………… 7.   The police have arrested five suspects …………………………………………… 8.   The doctor ordered him to take a long rest …………………………………………… 9.   They used to finish the work on time …………………………………………… 10.         They are sweeping the streets ……………………………………………