阅读下面短文，根据以下要求：1）汉语提示；2）首字母提示；3）语境提示，在每个空格内填入一个适当的英语单词，并将该词完整地写在相对应的横线上。所填单词要求意义准确、拼写正确。
It’s believed that you can quite easily improve your ability to remember
things through practice and exercise. But e_____ if you are successful,    
there are times ______ your memory seems to play tricks on you.        
Sometimes you remember things ______ really did not happen. Take           
one morning last week as an ______. I got up and found that I had          
l      the front door unlocked all night, yet I clearly remember          
locking it ______(仔细地) the night before. Memory “tricks” work the     
other way as well. Once in a while you remember ______ doing something 
and then find out that you d______. One day last month I was sitting           
in a barber shop w______ for my turn to get a haircut, and suddenly I          
______(意识到) that I actually got a haircut two days before.