Those bikes are not old．(改为单数形式)

______ _____ ______ _____ ______．

句型转换

Those are erasers. (改为单数形式)

________ ________ ________eraser.

句型转换

Those are erasers. (改为单数形式)

________ ________ ________eraser.

按要求写出下列单词.

单数形式：

those→________ these→________

families→________ men→________

按要求写出下列单词.

单数形式：

those→________ these→________

families→________ men→________