---Excuse me, is this seat taken?---____.Please have a seat.

A. Yes, it is   B.All right   C.No, it isn’t    D. OF course

---Excuse me, is this seat taken?

---______.Please have a seat.

1. A.
   Yes, it is
2. B.
   All right
3. C.
   No, it isn’t
4. D.
   OF course

—Excuse me, is this seat taken?

—________.

[    ]

A. Quite sorry    B. I am sorry

C. Certainly is   D. No, I don't think so

Excuse me,is this seat taken? ____

[　　]

A.No,I don’t think so.

B.Certainly is.

C.I am sorry.

D.Quite sorry.

Excuse me, is this seat ____?

a. take  b. taken  c. to take  d. taking