—How long have Mr.and Mrs.Smith________?—For more than twenty years.
My sister is____going out alone in the evening. She thinks it’s dangerous.
--____do you learn English so well?--I learn it____listening to the English songs every day.
Who knows this____girl?
The sweater is made____cotton, and it’s made ____Shanghai.
Cindy is____Alice. They use the same desk in the classroom.