thy are going to have the serviceman _an electric fan in the office tomorrowa,install b ,to install c,to be install d,installed

问题描述:

thy are going to have the serviceman _an electric fan in the office tomorrow
a,install b ,to install
c,to be install d,installed

选A 绝对没错
have somebody do something 太简单了

我认为选b

a,install
have sb. do
have sb. do sth.: 使某人做某事;让…做某事;叫人做某事