One day last spring,when the old man was having a walk in the street,a wild dog at him and hurt him on the left leg with its mouth.请问为什么是at him？是不是少了什么词？
But sooner the neighbor had a stomachache and had trouble breathing.为什么用sooner不用soon？
參考答案:1.漏了 bark
2. 可能表示"更快地"或"较快的"吧.