—Could you tell me something about the boy who helped you just now?—Sorry, I know nothing about him. We are __________ .

It is you, rather than he, that　　　for the accident．

Though he was born and brought up in Australia, he can speak ______ Chinese. 

—_______ to the sun, the flowers will become dry soon．—What you said does make ________ ．

___Mr Chen is waiting outside to speak to you. He appears to be quite ___ important person.