---Look, the old man who is playing ________ guitar is ______ university teacher.---Oh, how nice the music is!
The boy is ______of the two brothers.
He _______ after he chatted with his parents online.
–It ______ me about 25 minutes to get to the railway station yesterday.
--______beef do you need, Madam?—One kilo and a half.
Chinese students have ____ weeks ____ for the summer holiday than British students.