Joan has been missing for a couple of days and there is growing _____for her safety.
--- A high-tech exhibition in the National Museum.--- Really? What about visiting it now? .
The middle-aged man over there, for life was oace very hard, is now a very successful businessman.
—Did you stay up late last night?—Not very late. It was half past eleven I went to bed.
—When did accident happen?—Oh, it was on Sunday towards the end of this summer, as far as I can remember.
The project is so designed that once _______ nothing can be done to change it.