He is the only of the teachers who ____ completed forty year

He is the only of the teachers who ____ completed forty year 一道英语单选题He is the only one of the students who ____ a winner he is the only of the workers who likes XX he is the only one of the students who __elected. Miss chen is the only one of the teachers who give us wonder Dick is the only one of the teachers who___Chinese.He is one He is the only one of the teachers _____Spanish in our schoo He is the (only/the only) one of the students who studies ve She is the only who one of the women ____(wear).She is one o HE is one of the teachers who ___ popular with students. He is one of the best teachers who at our school. The number of the teachers in our school ( is ) about forty.