(2013·临沂二模)________ is often the case with old people, my grandfather is fond of doing morning exercise.
#78623
A
As
B
Which
C
What
D
It
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The people, ______ had been damaged by the flood, were given help by the Red Cross. 
#78652
A
all whose homes
B
all of whose homes
C
all their homes
D
all of their homes
I have bought two ball pens, _____ writes well.
#78692
A
none of them
B
neither of them
C
none of which
D
neither of which
There are so many tall trees in the forest,______________.     
#78712
A
some of them measures over 50 meters
B
some of which measuring over 50 meters
C
some of them measuring over 50 meters
D
some of which measures over 50 meters
I have bought two ball pens ,______ writes well.
#78716
A
none of them
B
neither of them
C
neither of which
D
none of which