-- Do you still remember when we went to Nanjing?--- I can’t remember now but _________ sometime last summer?
The pencil fell off the table and went _______across the floor.
Bill suggested________a meeting on what to do for the Shanghai Expo during the vacation.
S cientists have many theories about how the universe________into being.
As the air is being polluted,many kinds of wild animals are________.
Although the wind has________,the rain remains steady,so you still need a raincoat.