Write an essay of about 100 words to describe one of the unforgettable experiences in your campus life. Try to use the past continuous tense. 例文: The other night I was taking a shower in my dorm when I suddenly heard an acute alarm. It took me a second to realize that it was probably the fire alarm. I put on my clothes quickly, grabbed the key and went out to the corridor. I went downstairs with others. Soon all the students of the building were gathering on the grassland, and we were discussing what had happened.