she see the computer is on翻译

Look,she ( ) on the computer. 翻译:work on the computer The computer game is on A computer is on the she is the o______of the computer the desk on the computer is （.） ( )computer on the table is Susan's A computer game is on the f_______. there is the computer on a table She's not sure if the computer is fixed.怎么翻译好? The pupils can see a computer on the desk.(对a computer提问) He is working on the computer.这个句子有没有歧义?该怎么翻译?