We were just about ready to leave _____ it started to snow.
—We need a person badly to think up such an idea . —_________the new comer have a try ?
—Dad, would you buy me an MP3 player if I do well in the final exam? —I _________, I promise.
–I’m sorry but I must be going off now. --Ok, __________.
Can you think of some cases ___ drivers obviously knew the traffic rules but didn’t obey them?
It is such a difficult problem _______ no one can work out.