1.China（ ）the bid to host the the World Expo 2010.
A.has won B.won C.in winning D.wins
2.The old man always ( ) thick glasses and works very hard.
A.puts on B.takes off C.dresses D.wears
3.（ ）the center of Australia（ ）the desert which seems to go on forever.
A.Has;covered with B.Is;covered with D.Did;cover with
4.---Has Jack finished his homework yet?I am waiting for him.
---I've no idea.But he ( ) on it the whole afternoo.
A.is working B.was working
明天我就要期末考试了!