Ex. 4 Fill in each of the blanks with an appropriate word.I found a tree frog in my studio some months ago. I took it to my g__________, as I thought it would be a better place for the frog.But it came back and insisted taking the r________ in the studio. Why? I couldn’t get an idea. Then, after five months of being together, we seemed to be able to c____________ with each other. It may sound w____, but I did feel I came to understand what it wanted me to do. The frog came to me probably attracted by the h_______ tone of my computer, which sounded like that of other tree frogs, or with a m______ to tell me that frogs were dying around the world because of their s________ to the pollution and global climate change. As frogs are an “i________ species”, what has happened to them may happen to us, if we sit back and do nothing. We must act now, or it would be too late.