用所给词的适当形式填空。 1. Jack is a kind young man. He is very _____ (help) and people all like him. 2. We have sports _____ (two) a week. 3. Today is my _____ (one) day at school. I'm happy to see my new classmates. 4. The shop is _____ (close) at this time of the day. 5. Nick loves swimming. He is a good _____ (swim). 6. Sometimes we have dinner at my _____ (grandparent) home.