__________ has already been pointed out, grammar is not a set of dead rules.
#78708
A
As   
B
It  
C
That 
D
Which
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Look! The dictionary , _____is red , is a birthday gift given by Father.
#78710
A
which cover
B
the cover of which
C
the whose cover
D
that the cove
At present, we are studying a total of nine subjects, ________ I think is physics.
#78645
A
of them the most difficult
B
and the most difficult of which
C
the most difficult of them
D
the most difficult of which