求英语解答：把下列句子变为被动语态

求英语解答：把下列句子变为被动语态 英语：把下列句子改写成被动语态 把下列句子变为被动语态 The policeman was questioning the thieves at this time yesterday. 把下列句子改成被动语态,一空一词 . 把下面句子变为被动语态.6---9 把下列英语句子变为被动语态1、Where did they grow vegetables?2、We must keep the noise under 50 dbs(分贝) here. 求检查,英语句子改为被动语态 把两个英语句子改写为被动语态 英语 把句子改为被动语态 英语?句子变被动语态!、? 将下列句子变为被动语态he is buying his son a bike now 将下列句子变为被动语态1people speak English in usa 帮个忙明天要考试 She will finish her homework as soon as possible (判断时态：被动语态 否定句 一般疑问句把原句子变为下列时态 即 被动语态 finish--finished--finished否定句一般疑问句 Julie Thompson invented the cars in 1885 (判断时态：被动语态 否定句 一般疑问句把原句子变为下列时态 即 被动语态 invent--invented--invented否定句一般疑问句 Many people speak English in Singapore(判断时态：把原句子变为下列时态 即 被动语态 否定句一般疑问句 把下面句子变为被动语态I will send a message immediately 把句子变为被动语态 My mother often tells me to be careful. 把句子变为被动语态：Mother often tells her children a story at bed time.