This is my watch改为否定句

This is my watch改为否定句 This is a watch.改为否定句. This is my watch改为一般疑问句 this is my friend.(改为否定句) This is my grandmother.改为否定句 This is my father()改为否定句 This is my room 改为否定句 This is my ruler (改为否定句) This is my siste 改为否定句 This is my room 改为否定句 this is my brother 改为否定句 This is my grandmorther.改为否定句 there is something wrong with my watch改为否定句 There is somethings wrong with my watch(改为否定句) This is my friend This ( )( )my friend(改为否定句) it is my watch.（改为一般疑问句） （it is my watch.（改为一般疑问句） （ ）this（ ）watch? This is his pencil case改为一般否定句 This is my eraser 改为否定句 This is his pencil case改为一般否定句 This is my eraser 改为否定句