-- Who broke the glass?

-- I suppose _____ must be one of the children.

A. the one    B. he    C. it    D. who

-- Who broke the glass?

  - I suppose _____ must be one of the children.

A. the one   B. he   C. it      D. who

—Who broke the glass?

—I suppose ________ must be one of the children.

A. the one

B. he

C. it

D. who

—I suppose ________ must be one of the children.

A. the one

B. he

C. it

D. who