________ hard you try,it is difficult to lose weight without cutting down the amount you eat.(2012·湖南)
--- It’s thirty years since we last met.--- But I still remember the story, believe it or not, _________we got lost on a rainy night.
_______makes this shop different is that it offers more personal services.
We haven't settled the question of ______________ it is necessary for him to study abroad.
With his work completed, the businessman stepped back to his seat, feeling pleased_____ he was a man of action.
--- Could you do me a favour? --- It depends on ______ it is.