— Mary's ________ since the last time we met．

— Is that so?But in my opinion,she doesn't look older．

— Why did you come so late for work?

— I was ________ for 15 minutes on the way here in the traffic jam．

---How about this kind of fruit?

---Oh, this kind of fruit ________ lots of vitamin C and B.

—What do you think of the performance today?

—Great! ______ but a musical genius could perform so successfully

---I have got a headache．

---No wonder．You ________ in front of that computer too long．

--Which of the two ties would you like to take?

--_______. You know I’m not particular about ties.

— what about your history test?

— I have answered all the questions,but I'm not sure ________ I have got them all right．

--How do you like your English teacher?

--___________________.

—Tom is usually an honest boy.

—But can you imagine ________ in the exam?

-- Bill, you drive the car, _______?

-- But I drove it yesterday.