— ______sleep do you think is necessary for a Grade 9 student? — 8 hours at least.
Father _____ goes to the cinema with us although he dislikes going there.
Liu Huan, a famous male singer ,has long hair ,but he ______ short hair
They _______ arrive at the station before 12 o’clock, but they don’t appear now.
The meeting ______ by the time I got there yesterday.
Joe, my close friend, moved to Beijing years ago, and I ____ him since then.