_______ is known to all，China will be an _______ powerful country in 20 or 30 years’ time.
A、That；advancingC
as可以用来引导一个非限制性定语从句，通常无明显的先行词。as指代的是主句陈述的内容。而as引导的从句既可以放于句首，也可以放于句末或句中。
Motivation and personality may ________ the varying d egrees of success in one ’s career.
The house was quiet in the night, ________ the occasional coughing from my throat.
Her mind had been __________ into such a condition as she could not very likely have imagined possible a few months since.
In Europe _______ are the two leading contenders for a global reservations system.
lt is n ecessary ___ you to comply with our shipp ing in structi ons.
