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题目内容
（安徽理工大学-电气工程及其自动化）
The board deemed it’s urgent that these invitations _____first thing tomorrow morning.
A、had to be put in the mail
B、must be put in the mail
C、be put in the mail
D、should have been put in the mai
A、had to be put in the mail
B、must be put in the mail
C、be put in the mail
D、should have been put in the mai
参考答案