如题所述
第1个回答 2010-10-12
What is the robot doing本回答被提问者采纳
第2个回答 2010-10-23
[1] what are the robots doing ?
[2] what is the robot doing ?
[3] what are those robots doing ?
[2] what is the robot doing ?
[3] what are those robots doing ?
第3个回答 2010-10-12
Robots are doing
第4个回答 2010-10-12
What is the robot doing？
