—I don’t think I will win a lottery (彩票) of 5,000,000 dollars in all my life. —Well, ______. Everything can happen.
When I was doing shopping last Sunday, I ______ Mr. Smith in the street.
______ has been announced, we shall have the singing competition next month.
It’s a little surprising that a house made of wood or bamboo may stay up in an earthquake while _______ made of steel and concrete may fall down.
There was an oil painting _______ in the corner. It _______ there for several days.
Seeing the teacher _______ the classroom, the boy pretended _______ the text.