1.The students have been told that under no conditions _may the use_ the mobile phone in class.
问题描述：
1.The students have been told that under no conditions _may the use_ the mobile phone in class.
2.The police told me that I had passed the driving test and never in my life _had I felt_ so happy.
第一句我想选would they use
第二句我选的是did I felt
答
第一题的意思是学生被告知,在任何情况下可以使用手机在教室.它表示的是可能,所以不该用would,她是用于将来的情况的情态动词.
第二题,and是连接前后二个句子的,所以前后的语态应使用一致.