I don ' t know . A. where she comes from . B. how old is she C. When was she born ?
------I’m taking the driving test next Sunday. ------________!
______ trees are cut down in the forests every year.
The population of the world in 20 century became very much _____than that in 19 century.
If I’m free,I’d like to spend ______holiday in Dunhuang.
----_______ do you have out with your friends? ----Once a week.