英语中引号和逗号,句号的用法什么情况下引语内的句末用逗号,什么情况用句号xxx say 的后面的符号又该用什么

Vicky 说的对

有一下几种,看你XX says放在哪里.句首：Mr.and Mrs.Allen said,"We refuse to use that pesticide because it might pollute the nearby wells."句尾："We refuse to use that pesticide because it might pollute t...