Last night,all the classmates attended a birthday party held by a foreign teavher.At the party,we were so happy that we enjoyed ourselves very much.And we gave him many presents which surpried him a lot.We also sang the songs to him,saying"Happy Birthday To You".Of course,our foreign teacher blew the candles on the cake with his best wishes.Both the students and the teachers sang some English songs.The proformance acted by students made our teacher feel pleasant,We all had a good time together at the party.应该发生在学校里吧=▽=在by a foreign teacher 之后加上in our school 即可