词汇运用；请根据括号中的中文提示、英文释义或句意，写出句中所缺单词，使句子通顺。
1. I don’t know what ____________ (年级) they are in at Sunshine Middle School.
2. Li Hua wants to play in the next World Cup. I hope his dream comes ________.
3. Do you have any ____________ (an activity that you enjoy doing in your free time)?
4. We are ____________ (happy) to meet so many people from all over the world.
5. Daniel is in Class 1,and Simon is in Class 1,too. They are ___________.