. _____is known to us all, America is a developed country____ the first world.
#74089
A
As; belonging
B
which; belonged
C
as; belonging to
D
which; belonged to
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At last, they reached _______ there was no grass and trees.
#68235
A
to the place where
B
where
C
the place which
D
in which
.________they were singing, the teacher came in. 
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A
Before
B
after
C
As
D
Until
_________ is known to all,good friends _________ happiness and value to life.
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A
It; add
B
As; add
C
It; add up
D
As; add to
I think the doctor is able to cure of______he got.
#71867
A
all
B
what
C
whatever
D
anything