第2题: [单项选择]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 mail 参考答案:C 答案解析:[妙翻巧译] 董事会认为,明天早晨的第一件事就是将这些邀请函紧急寄出。 [解析] it is urgent that后接虚拟语气,即should+动词原形。