B.She talked to you just now. 她刚才还同你谈话呢。

　　7.A.She threw a bone at the dog. 她用一块骨头砸狗。

　　B.She threw a bone to the dog. 她把一块骨头扔给狗吃。

　　8.A.He presented a pistol at me. 他用手枪对着我。

　　B.He presented a pistol to me. 他赠送我