-Do you know the boy_______ is playing football over there?-Certainly. He is a friend of_______.
---Oh, The Old Man And The Sea! Whose book is it? ---It is
-Do you know Lang Lang? -Of course. He is a famous pianist and he plays the piano_______ .
"Can you _____ the lost wallet in detail?” the policeman asked.
Don't forget ______ thanks when other people help you.
I'd like you to meet Bob. is my best friend.