【判断题】普鲁卡因青霉素可发生重氮化偶合反应。()
【单选题】He always tells ____ lies, to tell you ____ truth, I don’t believe what he said at all.
【单选题】' Here is the money I promised,' he said,' I always ______ my promise.'
【单选题】He left ______ with my secretary that he would call again in the afternoon. He said he would keep ______ .
【单选题】He always tell ____ lies, to tell you ____ truth, I don’t believe what he said at all.