The other day my brother drove his car down the street at _____ I thought was a dangerous speed.
#68566
A
as
B
which
C
where
D
what
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In one corner of the garden there stands a tittle board,_______“Keep off the grass.”
#70301
A
On which writes
B
it says
C
on which is read
D
which reads
While having our dinner, _______. 
#68160
A
the door bell rang
B
our newspapers came to the door
C
we heard the door bell ringing
D
the postman brought several letters to us