单项选择题
Alec asked the policeman（）he worked to contact him whenever there was an accident．
A.with himB.whoC.with whomD.whom
单项选择题 Yang Liwei,（） we all feel proud, appeared on the Spring Festival Evening．
单项选择题 They have nothing（）with one another.
单项选择题 The day before yesterday the police including one officer（）searching for the murder in that mountain.
