—What a nice camera!—Yeah. It _______ Beijing.
Twenty percent of the water ______ from the underground(地下).
—Who helped you clean the classroom yesterday?—_______. I did it all by myself.
What fine weather it was! We decided _______.
He can’t go to work today________ his illness(病).
We don’t have ________ to buy this sweater, although the sweater is_______