问题
选择题
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
答案
答案：D
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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
答案：D