If dreamed you that you have to answer at examination or make the speech, however you forgot words, then in real life you have doubts in correctness of the decision made by you. If in a dream you left at home keys and cannot get to the apartment, then in reality you are engaged in business which to you not to liking. Try to change a job.
Look also: Smog Apartment Examination Promise Key
The word Forget or its synonyms meet in oneiromancy: Hurricane Building Lock (building) Mill Park Addressee Jeans Village Code Ware New Abrasive Boxer Analyst Cemetery Gnome Boy Courtship Headlight Tire
Be sure and keep any other thoughts out of your mind before drifting to sleep as a cluttered mind can decrease the chances that you will remember your dreams upon waking. Also, focusing on remembering your dreams upon waking in the morning is another very important thing. This sounds very easy, but is often hard for some to do. Interpret a dream by "dictionary dream of interpretation"
When you very first wake up, simply think about your dreams. Don't allow your mind to drift off to other things, just lay there and think about the things you dreamt about the night before - dictionary dream meaning.