从A、B、C、D四个选项中，选出可以填入空白处的最佳选项，并在答题卡上将该项涂黑。
21. His grandmother likes finding fault ________ others who talk with her ________ the spot.
A．with；in B．with；on C．in；on D．in；in
22. The college students must study hard to a good knowledge of advanced information technology.
A. take B. catch C. hold D. acquire
23. The Great Wall is so good a place ________ many foreign people come to visit ________ it has become well known all over the world.
A．as；as B．that；that C．as；that D．that；as
