The old man，abroad for twenty years，is on the way back to his motherland.?

A.to work　　　　　　　　　 B.working?

C.to have worked　　　　　　　 D.having worked?

The old man, _______ abroad for twenty years, is on the way back to his motherland.?

A. to work　  B. working ?

C. to have worked 　 D. having worked?

The old man, ____________abroad for twenty years, is on the way back to his motherland.

    A. to work          B. working         C. to have worked       D. having worked

The old man, ______ abroad for twenty years, is on the way back to his motherland.

A．to work           B．worked           C．to have worked     D．having worked

The old man, ________ abroad for twenty years, is on the way back to his motherland.