The milk was too hot for me to drink. (Remove too)

Fill in the given blank with either of the word mentioned in the bracketed part. A ...... weight is too heavy for me to lift. (ton's / ton)

You have been given with a cup of coffee which is too hot to drink .Which among the following is the best method to cool it? Why? (i) Placing it in a beaker containing water (2) Placing it on the surface of wood (3) Placing it on the surface of an iron block