The woman was about to open the door ____________ she heard a strange sound from inside.
#32002
A
as
B
while
C
when
D
then
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She thought I was talking about her daughter in fact，I was talking with my daughter.
#30615
A
whom
B
where
C
which
D
while
The agent was about to sign his name to the document ________，to our surprise，a stranger broke in to prevent him.
#30223
A
while
B
when
C
as
D
until
For a person with reading habits, a printed page contains not only words ________ ideas, thoughts and feelings.
#80293
A
yet
B
and
C
or
D
but
An independent traveler would like to struggle with maps and signs ____ he finds the way．
#31222
A
since
B
until
C
before
D
when