看图，将下列空白处填满

例:

a rabbit

a turtle

This is a rabbit .This isn't a turtle.

1.

a horse    a cow

This is__________

This isn't__________

2.

Mary    Margaret

This is__________

This isn't__________

3.

Michael    Mark

This is__________

This isn't__________

【答案】1. This is a horse. This isn't a cow.

2. This is Mary. This isn't Margaret.

3. This is Michael. This isn't Mark.

【解析】略