读课文《回声》从文中找出合适的词语填写。

____桥洞     ____景色     ____倒影

____回声     ____波纹 

根据句意及汉语提示完成单词.

① Have you____ (曾经)taken the subway alone late at night?  

②She won first____ (奖)in the 100-meter race.  

③It was his____ (梦想)to play football for his country.  

④We can not____ (付得起)the cost of two telephones.  

⑤It was a____ (遗憾)that you missed the party.  

***说：“唐明皇不会做皇帝，前半辈会做，后半生不会做。”说“前半辈子会做”是基于他统治前期的（    ）