单项选择题

I should be able to finish the task on time, ______ you provide me with the necessary guidance.

A．in case
B．provided that
C．or else
D．as if
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单项选择题
The prodigal son spent his money extravagantly and soon after he left home he was reduced to a beggar.
A．lavishly
B．economically
C．thriftily
D．extrovertly
单项选择题
The problem is that the loss of confidence among the soldiers can be highly contagious.
A．spreading
B．contemptible
C．contented'
D．depressing
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