在下列各句的空白处填入一个适当的词，每空一词，使句子意思完整，语法正确。

1. Thank you very much for ______ me to your house for dinner.

2. I can't go to the movie with you tonight. I have to ______ my dog.

3. Tom started learning to play the piano at the _______ of 12.

4. My sister can speak two foreign _______ French and Japanese.

5. She _______ the first prize in the Super Voice Girls Competition in 2009.

婴幼儿每次排便的时间应该为（）左右。

A.5分钟

C.10分钟

B.15分钟

D.20分钟