That is a nice clock.改为一般疑问句

That is a nice clock.改为一般疑问句 This is a clock.(改为一般疑问句) 改为一般疑问句This is a nice schoolbag.改为否定句That's your pencil box. This is a clock.(改为一般疑问句） that is a bed改为一般疑问句 That is a map.改为一般疑问句 That is a ruler.改为一般疑问句 This is a nice picture（改为一般疑问句） the man is a nice dentist改为一般疑问句 this is a clock变成一般疑问句 That is a clean classroom改为一般疑问句 The clock is on the wall(改为一般疑问句)