用所给单词的正确形式完成句子。
1. _____ (Who) lantern is it? It's David's.
2. You can't go to the museum because it is _____ (close) today.
3. We _____ (not celebrate) Christmas in China. We celebrate Chinese New Year.
4. Tim goes to see his parents _____ (two) a year.
5. It's my _____ (one) time to come to China. I like it very much.
