第二部分：英语知识运用（共两节，满分50分）
第一节：单项填空（共30小题，每小题1分，满分30分）
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. He recounted his experience in Vietnam, __________.
A. and all seated; listening B. with all seated; listened
C. with all seating; listening D. with all seated; listening
22. She forced herself not to give way ______ her emotion.[
A. to B. on C. at D. from
