whose computer is this改为同义句

Whose computer is this.[同义] whose computer is this改为同义句 The computer,___help we human beings have stepped into the information age,is regarded as an接上：important invention in the 20th century.A.which B.whose C.with its D.with whose请问这个句子该怎么分析?我选A怎么不行?with whose help Do you know whose the computer is?Do you know____ the computer ___ ___?转化成同义句 whose is your new computer from?这句话拿错了? Whose book is this? Whose ruler is this? Whose bike is it? “Whose fork is that whose is this book? “Whose room is this? Whose it is? whose shirt is that Whose hat is this? Whose jacket is it? whose frisby is whose coat it is? whose hat is it