—I think it’s going to be a11 argument.
—Yes. it could be.
—I wonder     we can do about it.

—I think it’s going to be a11 argument.

—Yes. it could be.

—I wonder     we can do about it.

A．what             B．how              C．when             D．whether

—I think it’s going to be a11 argument.
—Yes. it could be.
—I wonder     we can do about it.

1. A.
   what
2. B.
   how
3. C.
   when
4. D.
   whether

—I think it’s going to be a11 argument.

—Yes. it could be.

—I wonder      we can do about it.

A. what          B. how           C. when         D. whether