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
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A brilliant idea occurred to him, ___ to his research in the lab.
#67725
A
while devoting
B
while devoting himself
C
while he was devoted
D
while devoted
_________she was having supper , her telephone rang.
#41355
A
While
B
As soon as
C
After
D
Before
–Did you find your new dictionary?---Yes. I found it ____I had left it.
#70413
A
in where
B
in the place which
C
where
D
which