单项选择题

Difficult ______ the task was, they managed to accomplish it in time.

A．that
B．although
C．so
D．much

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单项选择题

I'm sure your suggestion will ______ the problem.

A．contribute to solve
B．be contributed to solve
C．be contributed to solving
D．contribute to solving

单项选择题

The ______ of a cultural phenomenon is usually a logical consequence of some physical aspect in the life style of the people.

A．implementation
B．manifestation
C．demonstration
D．expedition

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