第二部分:英语知识运用(共两节,满分35分)
第一节:单项填空(共15小题;每小题1分,满分15分)
21. These young seedlings will require _______ carefully.
A. look after B. looking after
C. having looked after D. to have looked after
22. The manager promise to keep me ______ of how our business was going on.
A. to be informed B. informed C. on informing D. informing