---What do you think of my idea?

---______.

---What did your brother do before he works here?

---He ________ in a university for four years．

---What was your father doing when I called for you just now?

---He was listening to me ________ what he ________ me.

---Tom, why didn’t you come to the meeting yesterday?

---I ________, but my car broke down．

---When are you leaving?

---The plane ________ at 11∶05.