May 12th,2008 is a special day, _____, I think,that will be remembered by the Chinese forever.
I was surprised by her words,which made me recognize ______ silly mistakes I had made.
Some researchers believe that there is no doubt ______ a cure for AIDS will be found.
The old lady’s hand shook frequently.She explained to her doctor ______ this shaking had begun half a year before, and, ______ only because of this, she had been forced to give up her job.
_______ in the regulations that you should not tell other people the password of your e-mail account.
Along with the letter was his promise _______ he would visit me this coming Christmas.