21. success of Zhu Zhiwen’s singing has been great honour to his hometown.
A. The，a B. The；an C. 不填，the D. The，不填
22. When I talked with my grandma on the phone, she sounded weak, but by the time we ______ up , her voice had been full of life.
A. were hanging B. had hung C. hung D. would hang
23. John complained to the bookseller that there were several pages______in the dictionary.
A. missing B. losing C. dropping D. leaking
