_______ 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
推荐题目
(2013·陕西高考)The witnesses ________ by the police just now gave very different descriptions of the fight.
#11372
A
questioned
B
being questioned
C
to be questioned
D
having questioned
Young students are ______ not to smoke, either in or out of school. 
#13286
A
suggested
B
requested
C
hoped
D
invited
If I am not __________ when you phone, ask for someone else’s help.
#10907
A
accessible
B
available
C
stable
D
suitable