问题补充:
单选题Modernscienceandtechnologyhas___communicationbetweenpeoplefarapart.A.made convenientB.made it convenientC.made it convenient forD.made it convenient to
答案:
A解析题目中has made是谓语,communication between people far apart短语是宾语,convenient是宾语的补语,被前置。如用B项,it是形式宾语代替不定式或从句。