Talk in class（改为否定祈使句）

You should not talk in class.改为祈使句 改为祈使句 You can't talk in class. You mustn't talk class.(改为祈使句) You can't wear a hat in class.改为祈使句 Come in ,please.改为否定句 you shouldn't make noise in class.(改为祈使句） Tom is looking out of the window in class.改为否定祈使句! 否定祈使句连词是and还是or 如：Do not talk (A.and B.or) eat in class. Talk loudly in the classroom.（改为否定句） You mustn't talk loudly in the reading-room(改为祈使句） YOU CAN'T TALK LOUDLY IN THE LIBRARY.（改为祈使句）为什么不改成NO TALKING You must not talk in the reading-room.（改为祈使句）大神们帮帮忙 You mustn't talk loudly in the cinema.(改为祈使句)