To tell the truth, I'm rather pessimistic about that.说实话，我对此一点也不乐观

今天的几个句子还是有关表达悲观的：1. I'm bound to lose.我肯定会失败。2. I suspect his failure is unavoidable.我想他的失败是不可避免的。3. I'm wondering if he would be promoted.我怀疑他是否能得到提升。