_______ 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。
He found _______ difficult to study maths.
Please make sure that the stipulations in the L/C are ______ exact accorda nee ___ the terms of the Sales Con tract.
It _______ for two hours now
Although each TV series will be rated on the basis of its usual content, the ratings can _____ from week to week
This is ________ good reading habits are not only an important study skill for the student, but also an important life skill for anyone.
