That ruler is 30 cm in_____.(long)

That ruler is 30 cm in_____.(long) My ruler is 30 cm long.His ruler is 30 cm long.合并为一句话 That is a ruler 回答 That is her ruler.(否定句） That___ ____her ruler. ______?That's my ruler.A.Whose ruler is it?B.What ruler is it? sarah's ruler is 20cm.Amy's ruler is 10cm （sarah's ruler is 20cm.Amy's ruler is 10cm （ 合并成一句话） whose ruler is that?同义句whose ruler is that?==?is that A:Is that a ruler?B:Yes ( ) ( ). what's that?（ ）is a ruler is that your ruler 做肯定回答 That is her ruler改为同义句 Is that your ruler?做否定回答. this ruler is longer than that one That is a ruler .改为否定回答 Is that his ruler(作肯定回答) That is a ruler.改为一般疑问句 That is a ruler 变为否定句 that long ruler is yours改为疑问句