— My children are always arguing.

    — ____  

    A. Just leave them alone.             B. That’s right.

    C. Are you sure?                       D. How old are the boys?

--- My children are always arguing.

--- ____

1. A.
   Just leave them alone.
2. B.
   That’s right.
3. C.
   Are you sure?
4. D.
   How old are the boys?

— My children are always arguing.

    — ____  

A. Just leave them alone.            B. That’s right.

C. Are you sure?                     D. How old are the boys?

— My children are always arguing.

— ____  

— My children are always arguing.
— ____