They must visit the reception desk, where staff greet and bid farewell to patrons.请问老师:greet在这里是不是不对?查了字典都是及物动词,是不是应该改为where staff greet patrons
and bid farewell to patrons?
请问老师:she had since been rushing off to the library a little more often than was strictly necessary for somebody who had no homework to do.加下划线的部分省略了什么主语?