He is sure that his plan will work口语说话的时候能不能把that去掉啊

Ben is sure that he will lose his job.改为同义句 He is confident that he will try his best to do extra work 改错：1.He said that he will do his work. he is sure that he will pass the exam.同义句he is sure ___ ___ My mother is sure of that he will come. is sure ,be sure ,is sure that ,will be sure 的差别 The clock is that which tells the time.能不能去掉which或者能不能把that去 My mother is sure of that he will come.这是什么从句啊 I'm afraid that he can't ...能不能去掉“that”? He is sure that he will win.(改为同义句） He is sure that he will win the game这个句子对吗? I an sure that he will come to________ after he is informed