B
should --- 除了是shall 的过去式外,还有(表示义务、责任)应当,应该的意思。
shall ---- 一般是 I shall ... 比较固定
又如:
What should be covered in a good business partnership agreement?
According to the Small Business Administration(SBA), the agreement
should include the following:
1, Amount of equity invested by each partner.
2, Type of business.
3, How profits and loss will be shared.
......
B。 在公告或条例中出于礼貌,常用should. may表示“可能”,can表示有能力做,shall有威胁、命令的含义,在一、三人称中表示请求。
还是选择B吧