B of E

例句：

1. 1.I'm not sure if we should go to the party tonight.
   我不确定我们今晚是否应该去参加聚会。
2. 2. He didn't believe me when I told him about my new job.
   我告诉他关于我的新工作时，他不相信。
3. 3. The boss didn't like our proposal because it was too expensive.
   老板不喜欢我们的提案，因为它太贵了。