Question

Our school is having a sports meeting. Someone ______ here already.
A. arrived            B. have arrived     C. has arrived

Answer 1

C

考察时态。句意：我们学校要举行运动会。有人已经到达了这里。结合语境可知下文描述的是现在已经完成的动作，故用现在完成时态。Someone做主语时，谓语动词用单数，故选C。