Neither he nor I am right, ______

Teachers should _____ fundamentals and difficult points in order to enable students toacquire newmaterial. [ ]

a good view of the scenery in China, Lucywould spend a lot of time on the train _________ travel by air

His essay on political structural reform_____ nationwide attention and there were many pros and cons from different fields.[ ]

We ______ here at lunch time; we were delayed at the airport, though.[ ]