题目内容：

语法填空

阅读下面材料，在空白处填入适当的内容（1个单词）或括号内单词的正确形式。

This story took place in 1903. Adam, an American businessman, was carried out to sea by a strong wind. A ship 1._________ (spot) and rescued him, 2.______ was how he got to London by accident . He at once went to the American embassy 3._____ (ask)   for help, but was refused. Two rich gentlemen invited him home because of a bet. They asked Adam a few questions, and Adam responded 4._____ a polite manner . They gave him a letter and asked him not to open it until two pm. Adam left wondering 5._______ would happen to him.