——When will they come back?

——I ________ don't know.

——I'm sorry to keep you waiting. I'll make shorter work of this.

——________. I'm not in a hurry.

---Could I use your computer for a few moments, please?

---_________. I'm not using it myself.

-- Jimmy came close to being killed in a traffic accident the other day.

-- ______? He was driving carefully all the time.

—Do you think I can pass the test?

— ________ , I'm afraid.

—Oh, must you? Stay a bit longer. ________ .

—Thanks anyway. I've got an early start tomorrow morning.

—Nothing wrong with it, ________ ?

—No, yours is a specially-built model. Drive carefully, though.

—How did you find the performance tonight?

— ________ .

—May I ask a favor of you?

—________.

-Which one of these movies, ________, is possibly won the medal?

-I prefer “The Hero”．