宁德市位于福建省东北部，有漫长的海岸线．据测算，海岸线总长约为878000米，用科学记数法表示这个数为[ ]

A．0.878×10⁶米

B．8.78×10⁶米

C．878×10³米

D．8.78×10⁵米

Only when _______ be possible to sign the papers.

A．does the lawyer come with it

B．the lawyer comes will it

C．has the lawyer come it will

D．the lawyer comes it will