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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Silver is the best conductor of electricity, copper______it closely.
A．followed
B．following
C．to follow
D．being followed
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Could you just give me a hand Let's ______the car into motion; it got a flameout just now.
A．shove
B．nudge
C．prompt
D．poke
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