This is a desk 复数

This is a desk 复数 英语句的复数形式What is this?It is a desk.改为复数形式 this is my desk改成复数句 It is a desk.改为复数句式 That is a desk .(改成复数) This radio is on the desk.变复数 This is a desk.(就a desk 提问） 改为复数形式 1.is there a bok on the desk?2.this is a nice dress.3.she is a little girl.4.this is his picture. This is a desk.(改为一般疑问句) This is a desk.(一般疑问句） This desk is a wooden desk.(改为同义句）This desk-------- --------- ---------wood. Is this a new play? My uncle has caught fish. This teacher is a party memberThe desk is made of wood 。还有这个，改复数形式 This is a toy bus.改复数 These are some watches on the desk.这个该单数句 This is a knife.（改为复数句） Is there a glass on theThis is a knife.（改为复数句）Is there a glass on the desk?(改为复数句)Ther are apples.（改为单数句） it is an eraser的复数形式!helpit is an eraserThis is my pencilIs that a photo of mineShe is our teacherIs this book on the desk these is a dictionary in the desk(单数变复数) is it a desk?（改为复数形式） Is there a watch on the desk?改为复数句