—May I speak to Mr Wang, please?—Sorry, he is not in. Can I take a (an) _______ for you?
--Which floor do you live_____? --The first floor. And I live ________Room 2046.
It’s difficult for the village children to cross the river to get to school. We think a bridge________ over the river
Remember off the lights when you leave the classroom.
She________ her hometown for many years. No one nearly knows her.
—Were you at home at 9:00 last night? I called you but nobody answered. —Sorry, I ________ at that time.