To meet the challenge, the young people preferred _______ heavier work to do in their spare time.

     A. to have given     B. to be giving            C. having give      D. to be given

    To meet the challenge, the young people preferred          heavier work to do in their      spare time.

     A. to have given     B. to be giving            C. having give      D. to be given

To meet the challenge, the young people preferred _______ heavier work to do in their spare time.

     A. to have given     B. to be giving           C. having give      D. to be given

To meet the challenge, the young people preferred _______ heavier work to do in their spare time.

A．to have given

B．to be giving

C．having give

D．to be given