——Must I come to see you again?——No, you _________.

The train is to start soon and Mary hasn’t turned up． What _____ have happened to her?

It has been announced that candidates       remain in their seats until all the papers have been collected.

One of our rules is that every student_____wear the school uniform while at school．

Days later, my brother called to say he was all right, but ________ say where he was.