First impressions are the most lasting.After all, you never get ________ second chance to make ________ first impression.(2010·北京)
The black colour of your shoes doesn’t_______ the white colour of your suit.
Mr.Smith was much surprised to find the watch he had had _______was nowhere to be seen.
Only when class began _______that he had left his book at home.
The students in this college are all taking courses _______a degree.
----You can’t finish the book in less than an hour, I suppose? -----________.