--- ______ is your telephone number? --- It’s 86553871.
Sara kept the secret to ________ and nobody knew about it.
The students in our school have ________ days off and spend _________ time doing their homework.
When it grows ________, it will grow ________ a strong animal.
—________ does John go to school?—He takes the underground.
Mr Wu is one of ________ in our school.