Last month we bought our two-year-old daughter a little dog．There were few children of her age where we live, and we thought a dog would make her less lonely．We were right．They play together children in the house．Both of them are very dirty and they cry when they do not get what they want．The dog is easier to look after than my daughter－he always eats up all his food and we don't have many dirty clothes to wash．My wife is also very happy because I have given up smoking．The dog doesn't like the smell．
(1)
The writer bought a dog for his daughter because his daughter ________．
[ ]
A．
had no children of her age to play with
B．
had only a few children of her age to play with
C．
liked a little dog
D．
wanted to play with it
(2)
How does the father know that his daughter is happy with the dog?