——What’s your mother?——She_________ a teacher, but now she is a doctor.

Your pocket money can be used to ______ charity, but you used to _______ a lot on snacks.

—Never      the lions and tigers. They’re too dangerous.    —Oh, I see. Thank you.

—Do you like swimming in winter?—Of course. The water         a bit cold at first，but then I am warm and full of energy.

---Would you like _________ the Great Wall with us? ---Yes, of course.