A.This is a red ruler. |
B.This is a ruler. |
A.This is our classroom. | B.That is our classroom. |
A.This is our library. | B.They are my libraries. | C.Do you have a library? |
A.This; This | B.That; This | C.This; That |
A.This is a coat. | B.This is a boat. | C.This is a cat. |