Ⅰ．用所给单词的适当形式填空

【1】When it became dark，there was nothing ______（see）in the room．

【2】The Grand Canyon is the ______（great）wonder of the natural world．

【3】I can't ______（reply）to this question．Can you give me some advice?

【4】He ______（get）to the station in five minutes．

【5】When I arrived home，it ______（rain）．