将下列句子改为选择疑问句。
1. The boy is tall. The boy is short.
_____ the boy tall _____ _____?
2. He knows Mr. Wang. He knows Mr. Zhang.
_____ he know _____ _____ _____ Mr. Zhang
?
3. He is old .He is young..
_____ he _____ _____ _____?
4. This is a cell phone. This is a telephone.
_____ this a cell phone _____ _____ _____?
5. Is this a doctor? Is this a nurse?
_____ this _____ _____ or _____ _____?