—Where are you ? —I’m going to the airport to my friend.A. heading on; pick upB. going fo

问题补充：

—Where are you ?

—I’m going to the airport to my friend.

A. heading on; pick up

B. going for; pick down

C. heading for; pick up

D. heading away; pick down

答案：

A. heading on; pick up

B. going for; pick down

(答案→)C. heading for; pick up

D. heading away; pick down

解析：短语辨析。. heading on面向；pick up捡起，接人； going for去找，被认为；pick down摘下。heading for出发，去向； heading away前进。句意：你要去哪儿？——我要去机场接我的朋友，故选C。