The boy is ____. Today is his ____birthday.
The population of China is _______ than that of _______ country in the world.
______interesting the work is !
—_________ a week does Tom go to the club ? — Once a week.
I met Jim yesterday, we _______ each other since _______ from the university.
—He’s seldom asked to speak at the meeting, _______he_? —________, many times.