Amy makes fewer mistakes than Frank. She does her homework ________.

 I know you are shorter than your two brothers, but you run _______ of you three.

My friend and I are       good at biology. But we don't like geography very much.

--- Did you go to the cinema to see 3D The Hobbit last night?--- No, I ________ go to the cinema. The tickets are too expensive.

 My parents          in the same post office.