脑筋急转弯（英语）1.How long is a shoe?2.Whatis the left side of an a

1.just four words
2.the letter "a"
3.When it's raining cats and dogs.(下大雨.rain cats and dogs 下大雨 ) 下了很多猫和狗,老鼠很怕啊!
4.Heat, becase you can catch a cold