句型转换

1. Tony does his homework on the computer.  (改为否定句)

Tony ______ ______ his homework on the computer.

2. Do you have a computer at home?    (做否定回答)

__________________

3. Tom sits behind me.    (对画线部分提问)

______ ______ Tom ______?

4. I usually play games and download music from the Internet.    (对画线部分提问)

______ do______ usually ______?

5. Elena plays the piano after dinner.   (变一般疑问句)

______ ______   _____ the piano after dinner?

我国正式的法律渊源或法律形式有：宪法、法律、行政法规、（）、（）、民族自治法规、军事法规、军事规章、特别行政区的法律以及我国政府承认或缴入的国际条约。