【单选题】He always tells ______ lies, to tell you ______ truth, I don’t believe what he said at all.
【简答题】He was so brave that he______ (宁死也不泄露秘密).
【单选题】类毒素是
C.
与外毒素具有相似的抗原相似的抗原性但没有毒性
【简答题】He said he worked hard so as to _______________ (不辜负他母亲的希望).
【简答题】He said he would____________. (不辜负人们的信任和期望).