把下列句子补充完整。
1．知识是                                                                              。 
2．我最爱吃                                                                          。 
3．大树下出现了                                                                   。
4．雷锋叔叔是                                                                      。 
5．                                                                          好可爱呀!  
6．课间活动时，                                                                   。 
7．有……还有                                                                   ！  
8．多么……多么……                                                                       。 
9．像……                                                                                     。   
10．                                                                      尽情地歌唱。