Having decided to rent a flat,we（ ）contacting all the accommodation
问题描述：
Having decided to rent a flat,we（ ）contacting all the accommodation
下接：agencies in the city
A set about B set down C set out D set up
答
A
set about doing sth开始做某事
set out to do sth开始做某事
set down写下,记下,安顿下来
set up建立为什么不选Ccontacting如果改成to contact就可以选C.