--- ______________do you go for a trip with your family? ---Once a week.
)Come and have a look at these bags in red. We sell them _____ very good prices.
)—Are your __________ workers (工人)?—No, .
—________ is the math book?—It’s in the bookcase.
)—Is this girl your sister?—_________.
)— Do Lucy and Lily have _________ tennis ball?— No, they don’t have one. They don’t like playing ______ tennis.