1. 对于昨晚没能准时来，我向你道歉。（apologize to）
2. 如果是这样的话，主人一定是死于意外的事故。（in this case, host, unexpected）
3. 为了表明你很感谢被邀请参加晚宴，通常要带一瓶酒。（to show, appreciate, it is customary to）
4. 随着期末考试的临近,我们的压力也越来越大. (the closer……The more)
5. 在保护环境这方面,我们还有很长的路要走. (Have a long way to go)
參考答案:1.I apologize to you for my late of yesterday.
2.in this case, the host must die for the unexpected accident.
3.In order to show your appreciate of being invited,it is customary to take a bottle of wine along with you.
4.the closer the date of the final exam,The more the pressure we fell.
5.we have a long way to go to protect the environment