because he cool and very clever这句话语法对么?

because he cool and very clever这句话语法对么? How clever a boy he is!这句话对么 Barker was very happy,because he likes to chase cats.这句话的语法有 He is very clever,because he always answers the questions___ ---Sam becomes the top student because he is very clever. He is very clever and study very hard. 翻译这句话：He's very clever.He'sright from eggs to the apples. He is very clever. He is very clever and work out the question 改错 is very clever.And he is_ that girl. he can run because his leg was badly hurt这句话对么 初一英语选择题：I think he is very clever because he has ____ hair.