英语句子开头第一个字母必须__________ ，词与词之间必须有__________ 的间隔。

My son is studying for an important exam. Could you please the music a little -I’m very sorry.

___________ have you been away from your Yang Zhou, Janet—- 5 years ago.

You may not agree, but _______ I think she is a very good girl

I _____there little more than a week when I set to work with the scientist. [ ]