在下列各句的空白处填入一个适当的词，使句子意思完整，语法正确。

1．_________ English movies is a good way to learn English．

2．She is a careless girl．She often makes some ________ in grammar．

3．I like music, and my father used to take me ________ concerts．

4．Teenagers should be allowed to choose their ________ clothes．

5．We know John likes playing the guitar．It must _______ to him．