LESSON 1.
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* Problem 1.
1. This is a cat.
2. This is a dog.
3. This is an apple.
4. That is a notebook.

* Problem 2.
1. That is a bus. 
2. This is your pencil.
3. That's a boy.
4. This is Jane.
5. This is Yamada Taro.

* Problem 3. 
1. This is an egg.
2. This is a map.
3. This is Japan.
4. This is my scool.
5. That is your house.

* Problem 4.
1. This is my radio.
2. That is Tom's dog.