China replaced Japan in 2010 as No. 2 economy, _____ China’s continuing rise in economic and political influences.
—Has William finished writing his graduation paper yet?—I don’t know exactly,but he __________all day.
—Would you like to tell me what our teacher said just now?—She said that light__________faster than sound.
—Did you telephone the manager’s office?—Yes,he__________back before 9 o’clock this morning.
You can certainly leave the classroom as soon as your homework__________.
—Do you smoke?—No,I don’t.It’s two years since I __________.