二、单项填空（共20小题；每小题`1分，满分20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. ______ famous actor Jacky Chen will go to Hollywood by air next week, where he has been invited to play_______ leading part in a new film.
A. A; the B. A; a C. The; a D. The; the
22. ---- Do you know our town at all?
-----No, this ________ the first time that I _________ here.
A. was; has come B. is; come
C. is; had come D. is; have come
23. Mr. Green asked Lily ________ she had written to her father the day before.
A. whether had she written to her father
B. if she writes to her father
