二．语言知识及运用 （共四节满分90分）
第一节 单项选择（共15小题，每小题1分，满分15分）
21.- Lucy doesn’t mind lending you her dictionary.
- She ________ . I’ve already borrowed one .
A. can’t B. mustn’t C. needn’t D. shouldn’t
22. Jenny _________ have been here by now. I wonder what’s happened to her.
A. must B. should C. would D. might
