WHO IS THE SB

WHO IS THE SB be open for sb还是 be open to sb?为什么那为什么我们书上写the swimming pole is open all year round for students who like swimming. Who is the man. Who is the man who is the woman____for? who is the beautiful who is the girl? who is the writer who is the pig who is the Who is （ ) the middle? who is the winner? who is the king? who is the speaker? who is the who is that boy___with sb Atalking Bis talking who is that sb的意思 如Who is that man? It is sb who 的强调句中Sb用什么格?