As soon as the accident happened ,Mr Su called 110 ______his mobile phone.解释并说明理由
问题描述：
As soon as the accident happened ,Mr Su called 110 ______his mobile phone.解释并说明理由
A with
B by
C used
D on
答
选A.这个地方肯定是用介词,use是动词,如果是using那还可以!call by 没有这个搭配.call on 是：拜访（某人）；叫；号召；要求 的意思.所以,应该选A,with介词,表示使用什么工具答道目的!