Last month，we learnt a passage in the text book Do You Remember What You Were Doing？
   It reminded me（1）

of

of

the day that I went to study in college.I could clearly remember the date--- September 11，2001.
   It was near midnight when we heard a loud noise coming from the building next to ours.As new students，most of us didn't know what（2）

happened

happened

.A few minutes later，the whole building was filled with loud noises.We just couldn't fall（3）

asleep

asleep

with students shouting and knocking at something loudly.The next day，our head teacher told us two airplanes hit the twin towers of the world trade center in New York and about an hour later a third plane crashed into the Pentagon（美國(guó)國(guó)防部五角大樓）.We were really shocked and couldn't believe the whole story was（4）

true

true

.
   Another unforgettable moment was the time when there was an（5）

earthquake

earthquake

in Wenchuan，Sichuan Province.I was going to start my class on the afternoon of May 12th，2008.All of a sudden，the teacher's desk moved a little.Being unhappy with the students' homework，I was telling them that they wouldn't get good grades（6）

unless

unless

they were hardworking enough before the final exam.（7）

Although

Although

there was still a month left，time and tide wait for no man.Being worried about their future and the coming exam，I kept on pushing them with a long speech before I started my class.Soon the building began to shake.I realized the situation was serious and asked the students to run out one after（8）

another

another

.
   Did you remember what you were doing when some big events took place？