He told me that he had two girl-friends, neither of _______ knew anything about the other.
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.
The poor young man is ready to accept ______ help he can get.