_______ is known to us all that the old scientist, for _______ life was hard in the past, still works hard in his eighties. 
#11894
A
It; whom
B
As; whose
C
As; whom
D
It; whose
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Do you know how much that _____?
#12803
A
adds
B
adds up
C
adds to
D
adds up to
 What a table! I’ ve never seen such a thing before. It is ______ it is long. 
#14042
A
half not as wide as
B
wide not as half as
C
not half as wide as
D
as wide as not half