根据括号内的要求进行句型转换。
1. I don't know where I should go. (变为简单句)
I don't know where ________ ________.
2. You could write him a letter. (变为一般疑问句)
________ I ________ him a letter?
3. He was playing computer games when I came in. (对划线部分提问)
________ he ________ when you came in?
4. "Where do you live, Tom?" Mr. Green asked.
Mr. Green asked ________ where ________ lived.
5. I think she can speak Chinese and Japanese. (改为否定句)
I _______ think she can speak Chinese _______ Japanese.
