根据句义完成句中已给出首字母的单词。

1． What a hot day! Look! Maria is s       in the river．

2． It t       me 25 minutes to go to school every day．

3． We should brush out t       twice a day．

4． The Yangtze Rover is the l       river in China．

5． He is i       in English． He wants to be an English teacher．