He was about to leave the office for home _______someone knocked the door and asked for some help.
#30110
A
until
B
while
C
as
D
when
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Though he is busy, music has always been _______ his work.
#32003
A
as much a part of his life as
B
as a part of his life much as
C
as much as a part of his life
D
so much a part of his life as