Must we keep the room_______ all the time? —No, you don’t have to.
Who will teach _______ oral English next term? Can it be a new teacher?— Perhaps. But our head teacher hasn’t told us ________ .
Father’s Day is on _________ Sunday of June.
The old man lives ____ in the countryside, but he doesn’t feel_____ because he chats with his children on the Internet every night.
________of the students in our class are from the north.