Bài1: Chuyển từ chủ động sang bị động 1.Alices strange ideas astonished everybody. 2.The garage is going to repair our car for us next week. 3.someone left the purse in the classroom. 4.the scientists have studied the problem carefully. 5.the students in my class are going to organize a surprise party this evening. 6.he asked me to send a stamped envelope. 7.they have awarded Andrew a prize for his essay. 8.how do people make candles? 9.the pollution in the city is affecting peoples breathing. 10.who invented the telephone? 11.Mr. Smith has taught us English for 2 years. 12.did they build that house in 2013?