第二部分英语知识运用（共两节，满分45分）
第一节 单项填空（共15题，每小题1分，满分15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。
21. Tom, can you give me a/an _______ that the homework will be finished on time next time?
A. mission B. remark C. guarantee D. attraction
22. _______, I was just about to phone you when you phoned me.
A. Funnily enough B. That’s not the point
C. You may be right D. It’s really upsetting
23. He ______ the piano regularly for many years when he was young, but he is too busy now.
