–We should do what we can _____ the endangered animals.` --Yes, it’s duty_____ them.
—How do you spell your name, please?—____
—Boys and girls, welcome to my home and ____.—Thank you.
—Is this ____ schoolbag, Michael?—No, it isn’t. ____ is here.
—What about something to drink?—____
Miss Wang teaches ____ English. We all like ____.