My teacher always stareted his lesson by picking one student to make a presentation.it"s a little scary because he did not give us much time to prepare for the topic.so when my trun came,i was requure ed to describe Volcano briefly,He said I could say anything about it.but i was so embarrassed,i couldn"t say a word.i did not know what to say as i was really terrible at geography .I just stood silently .