II.完成句子
1．We ____________(不该) play football on Sundays.(suppose)
2．Without international cooperation, developing countries can not prosper, ____________(可持续发展也是不可能的)．(nor)
3．We ____________(正要) get on the train when Jack shouted in surprise.(about)
4．____________(要求) in the regulations that you should not tell other people the password of your e－mail account.(require)
