句型转换。(15分,每小题3分)
1. She is fourteen.. (对划线部分提问) 
______  ____   is she ?
2. It is a bus.(改为复数形式)   
They __________  __________.
It’s my ruler.(改为否定句)
It __________ my __________.
4. He has a big nose. (变为一般疑问句)  
_________ he __________ a big nose?
5. This is my schoolbag. (改为同义句)
This schoolbag is __________.