_______ 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。
We ______ the seminar sponsored by you in September last year.
It has all the _____ of a good detective story.
As for family education, parents are encouraged to rely on ________ rather than punishment.
In the U.K.,the Queen's Silver Jubilee is in _______.
Jack managed to get 147 tapes and 100 books plus lots of magazines through customs in a(n> _____ way
