tom listened to cds yesteidag 该成否定句怎么改

tom listened to cds yesteidag 该成否定句怎么改 Tom listened to CDs in class yesterday.改为否定句为：Tom _____ ____ Tom is writing to his friend.（该怎么改啊?否定句 ） tom listenes to cds yesterday变否定句 father slept all day last Tell Tom to go to school on evening.怎么改否定句? "Tom can swim very well."改否定句,怎么改! stay at home,tom 怎么改否定句? He listened to the teachers very carefully.(改为否定句) l went to harbin改否定句怎么改 改否定句怎么改 改同义句:I want to buy some CDs for him .()()some CDs for him. tom is my frieng改否定句.