complemento de la anterior conversacion

1. what is this
    it´s a marker.

2. what are there?
    they are pens.

3.what´s this?
   It´s an english bock.

4. What is this?
   It´s an encyclopedia.

5. What´s your name?
   My name is  susan.

6. What are these?
   They´re paper chips.

                 nota importante they´re =/= their