giúp mk câu bị động vs 1 what language do they speak in japan ? 2 youshould have take thế books back to the library. 3 your brother is washing the clothes, isn't he? 4 have you met him before? 5 the police shouldn't allow people to park there. 6 people mustn't leave bicycles in the hall. 7 who is going to meet ann at the airport? 8 you have to do this work now. 9 sarah was writing a letter when i came.