____that called this morning?为什么只能用who is it

____that called this morning?为什么只能用who is it ____that called this morning?A．Who was B．Who it was C．Who was him D．Who was it This is called word what is this called? This MP3 player is cheaper than that one This MP3 player _____ ____ ____ ____that one 句型转换This MP3 player _____ ____ ____ ____that one 句型转换 This car is different from that one.=this car is ____ ____ ____that one. a girl called linda called you this morning.有错? This kindof quilt ______ smog.A.called B.is called This is a car B ____that isnot a car It is a bus 英语翻译This song is called secret. WHAT IS THIS THING CALLED SCIENCE怎么样 what is this breakfast fruit called? WHAT IS THIS FILM CALLED LOVE怎么样 英语what is this part called? This is called me? 什么意思 This is a beautifui city called Sanghai. this is called forming a car pool This book is six yuan.That one is thirty yuan.（合并一句）This book is__ ___ ____that one.