Ⅰ.根据句意及首字母或汉语提示完成句子
1．Our teachers often p________ their new classes at this time. Please don't trouble them.
2．I think you are the p________ of our school. You have done very well in the competition.
3．Do you know the man c________ Ma Yun?
4．We ________(发现) this beach while we were sailing around the island.
5．You can't ________(想象) the life without the Internet.
