阅读短文，从方框中选择适当的单词填空。

I am an American boy.____to China in 2010.I have been studying here for
two years. My father often takes me to play football on the playground.
Last Sunday, l was taken to the park by my father. We saw a lot of monkeys
 in the tree. While I was walking along the river, I heard a voice from behind. I thought to myself, “It must  Mr. Brown." "Hello, Mr. Brown!" My father said. Are you taking photos here?" "Yes, it's such a beautiful park," Mr. Brown said.
China is a great country. We really enjoy  here. Father says we will _back to America for a short holiday next week.