单项选择题

He kept postponing （） his assignments.

A．hand in
B．to hand in
C．handing in
D．having handed

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单项选择题

Fifty dollars （） a big sum of money for a child.

A．are
B．is
C．being
D．having been

单项选择题

Students at colleges in large cities ran into （） debts because it was easier for them to find part-time jobs than those in rural areas.

A．little
B．less
C．few
D．fewer

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