单项选择题

He always tries his best to complete it on time.

A．However the task is.
B．However hard the task is.
C．Though hard the task is.
D．Though hard is the task.
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The problem has ______simply because you didn't follow my instructions.
A．raised
B．aroused
C．risen
D．arisen
单项选择题
It is up to the government to ______the rights of individual citizens.
A．withdraw
B．withhold
C．upgrade
D．uphold
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