—By the way, _____________ is it from your home to the Summer Palace?—It usually takes me 30 minutes to walk there. 

 The          of this house is very high. He can’t afford it at all.

 — ______ I have some more cake?— No, I’m afraid you can’t. 

---What did you do yesterday?---My brother took two friends of _______ to play chess with us. But I don’t know________ of them.

 When the fire started, Tom was 　　　 to help all the children out. He is both brave and smart.