根据句意用括号中单词的适当形式填空,使句子的意思完整、正确。
There _________ (be) three tall buildings in my school.
Sally wants to go_________(boat).
Mary loves dancing.She dances very _________(good).
Mr Chen is a good teacher.He teaches _________(we) English.
This is my room and that is my _________ (sister).